Unit 3 Review Questions. AP Biology
|
|
|
- Audrey Charles
- 7 years ago
- Views:
Transcription
1 Unit 3 Review Questions AP Biology
2 1. What was the first organic molecule to be synthesized in the laboratory? A. ammonium cyanate B. hydrogen cyanide C. urea D. acetic acid E. methane
3 2. Carbon is an unusual atom in that it can form multiple bonds. Which statement is NOT true? a) A carbon-to-carbon cis double bond is the type found in nature and is associated with cardiovascular health. b) A carbon-to-carbon trans double bond is made artificially in food processing and is associated with poor cardiovascular health. c) Multiple carbon-to-carbon double bonds located near each other can absorb light, so they are found in molecules in the eye or in chloroplasts. d) Multiple carbon-to-carbon bonds are stronger than single bonds. e) Saturated fats are those that have a carbon-to-carbon double bond and are associated with good health.
4 3. What type of chemical bond joins a functional group to the carbon skeleton of a large molecule? A. covalent bond B. hydrogen bond C. ionic bond D. double bond E. disulfide bond
5 4. Which of the following is NOT one of the seven functional groups found in biological molecules? A. amino B. hydroxyl C. carboxyl D. cyanate E. phosphate
6 5. Which functional group behaves as a weak acid in organic molecules? A. amino B. carboxyl C. carbonyl D. sulfhydryl E. hydroxyl
7 6. Which functional group behaves as a weak base in organic molecules? A. amino B. carboxyl C. carbonyl D. sulfhydryl E. hydroxyl
8 7. Which type of molecule always contains phosphate groups? A. carbohydrates B. lipids C. proteins D. nucleic acids E. none of the above
9 8. What type of isomer is propanal compared to acetone? A. cis-trans isomer B. structural isomer C. enantiomer D. none of the above; these are not isomers
10 9. Which type of molecule may contain sulfhydryl groups? A. carbohydrate B. lipid C. protein D. nucleic acid E. all of the above
11 10. Which functional group is best known for its ability to change the shape of a molecule without affecting its reactivity? A. amino B. carboxyl C. sulfhydryl D. phosphate E. methyl
12 11. The table below gives the molar ratios of some of the products from Stanley Miller s abiotic synthesis of organic molecules experiment. What is the molar ratio of serine? A. 1 mole of serine per mole of glycine 2 moles of serine per mole of glycine B. 3.0 x x 10 2 moles of glycine per mole of serine C. 1 mole of serine per 3.0 x 10 2 moles of glycine D.
13 12. The table below gives the molar ratios of some of the products from Stanley Miller s abiotic synthesis of organic molecules experiment. Which amino acid is present in higher amounts than glycine? A. serine B. methionine C. alanine D. serine and methionine
14 13. The synthetic atmosphere in this experiment contained H 2S instead of water vapor. Which of these amino acids could not have been produced in Miller s original abiotic A. serine B. methionine C. alanine D. glycine synthesis experiment?
15 14. What are the four emergent properties of water that are important for life? A. cohesion, expansion upon freezing, high heat of evaporation, capillarity B. cohesion, moderation of temperature, expansion upon freezing, solvent properties C. moderation of temperature, solvent properties, high surface tension, capillarity D. heat of vaporization, high specific heat, high surface tension, capillarity E. polarity, hydrogen bonding, high specific heat, high surface tension
16 15. Water shows high cohesion and surface tension and can absorb large amounts of heat because of large numbers of which of the following bonds between water molecules? A. strong ionic bonds B. nonpolar covalent bonds C. polar covalent bonds D. hydrogen bonds E. weak ionic bonds
17 16. Water has an unusually high specific heat. What does this mean? A. At its boiling point, water changes from liquid to vapor. B. More heat is required to raise the temperature of water. C. Ice floats in liquid water. D. Salt water freezes at a lower temperature than pure water. E. Floating ice can insulate bodies of water.
18 17. Surfactants reduce surface tension of a liquid. Which of the following would result if water was treated with surfactants? A. Surfactant-treated water droplets would form a thin film instead of beading on a waxed surface. B. Surfactant-treated water would form smaller droplets when dripping from a sink. C. Water striders would sink. D. All of the above would occur. E. Only A and C would occur.
19 18. In a glass of old-fashioned lemonade, which is the solvent? A. lemon juice B. sugar C. water D. lemonade mixture E. ice
20 19. Skin is coated with a hydrophobic glycolipid. What would happen if this was not present? A. Water would be lost from skin cells more quickly. B. Skin would swell when swimming. C. Skin would wrinkle more. D. A and B only E. A, B, and C
21 20. Compared to an acidic solution at ph 5, a basic solution at ph 8 has A. 1,000 times more hydrogen ions. B. 1,000 times less hydrogen ions. C. 100 times less hydrogen ions. D. the same number of hydrogen ions but more hydroxide ions. E. 100 times less hydroxide ions.
22 21. Which of the following acts as a ph buffer in blood? A. carbonic acid B.bicarbonate ion C.carbonate ion D.hydroxide ion E. A and B
23 22. Scientists predict that acidification of the ocean will lower the concentration of dissolved carbonate ions (CO 3 2 ), which are required for coral reef calcification. To test this hypothesis, what would be the independent variable? A. ocean ph B. the rate of calcification C. the amount of atmospheric CO 2 D. time E. volume of seawater
24 23. Based on this graph, what is the relationship between carbonate ion concentration and calcification rate? A. As the acidity of the seawater increased, the rate of calcification decreased. B. As the rate of calcification increased, the concentration of carbonate ions increased. C. As the concentration of carbonate ions increased, the rate of calcification decreased. D. As the concentration of carbonate ions increased, the rate of calcification increased.
25 24. If the seawater carbonate ion concentration is 250 µmol/kg, what is the approximate rate of calcification according to this graph? A. 5 mmol CaCO 3 per m 2 per day B. 10 mmol CaCO 2 per day 3 per m C. 15 mmol CaCO 2 per day 3 per m D. 20 mmol CaCO 2 per day 3 per m
26 25. Polymers are made of connected monomer subunits that are joined by what type of bonds? A. ionic bonds B. covalent bonds C. hydrogen bonds D. hydrophobic bonds
27 26. Silicon (atomic number 14, atomic weight 28) is in the same column as carbon in the periodic table of the elements (group IV). Why isn t life on Earth based on silicon, instead of carbon? A. Silicon is far more rare in the Earth s crust than carbon. B. Silicon cannot form polar covalent bonds with oxygen. C. Silicon has a different valence than carbon. D. Silicon compounds often have very different physico-chemical properties than the analogous carbon compounds.
28 27. Which polysaccharide has the greatest number of branches? A. cellulose B. chitin C. amylose D. amylopectin E. glycogen
29 28. A polysaccharide you are studying is found to contain unbranched β glucose molecules and cannot be digested by humans. Which polysaccharide are you studying? A. cellulose B. DNA C. chitin D. starch E. glycogen
30 29. Lipids cannot be considered polymers because A. they contain polar covalent bonds. B. their structure includes carbon rings. C. they can be artificially created. D. their monomers are connected via ionic bonds. E. they are not composed of monomer subunits.
31 30. All lipids A. are made from glycerol and fatty acids. B. contain nitrogen. C. have low energy content. D. are acidic when mixed with water. E. do not dissolve well in water.
32 31. Sickle-cell disease is caused by a mutation in the -hemoglobin gene that changes a charged amino acid, glutamic acid, to valine, a hydrophobic amino acid. Where in the protein would you expect to find glutamic acid? A. on the exterior surface of the protein B. in the interior of the protein, away from water C. at the active site, binding oxygen D. at the heme-binding site
33 32. Which is not a function of proteins? A. help make up membranes B. carry the code for translation from the nucleus to the ribosome C. bind to hormones (hormone receptor) D. can be hormones E. speed chemical reactions
34 33. How does RNA differ from DNA? A. DNA encodes hereditary information; RNA does not. B. DNA forms duplexes; RNA does not. C. DNA contains thymine; RNA contains uracil. D. all of the above
35 34. DNA and polypeptide sequences from closely related species are more similar to each other than sequences from more distantly related species. For the remaining questions, you will look at amino acid sequence data for the β polypeptide chain of hemoglobin, often called β-globin. You will then interpret the data to hypothesize whether the monkey or the gibbon is more closely related to humans. In the alignment shown below, the letters give the sequences of the 146 amino acids in β-globin from humans, rhesus monkeys, and gibbons. Because a complete sequence would not fit on one line, the sequences are broken into segments. The sequences for the three different species are aligned so that you can compare them easily. For example, you can see that, for all three species, the first amino acid is V (valine) and the 146th amino acid is H (histidine).
36 Scan along the aligned sequences, letter by letter, noting any positions where the amino acids in the monkey or gibbon sequences do not match the human sequence. 34. How many amino acids differ between the monkey and the human sequences? A. 2 B. 6 C. 8 D. 10
37 35. How many amino acids differ between the gibbon and the human sequences? A. 1 B. 2 C. 6 D. 8
38 36. What percent of monkey β-globin amino acids are identical to the human sequence? (This is called the percent identity between the monkey and human β-globin sequences. Note: 146 amino acids total.) A. 5.48% B. 94.5% C. 95.9% D. 98.6%
39 37. Based on the β-globin alignment, identify the best hypothesis about how humans are related to monkeys and gibbons. A. Monkeys are more closely related to humans than gibbons are because monkeys β-globin sequence has the lower percent identity with humans. B. Both monkeys and gibbons are equally unrelated to humans because neither monkeys nor gibbons have the exact same β-globin sequence as humans. C. Both monkeys and gibbons are equally related to humans because they both have less than a 10% difference in β-globin sequence with humans. D. Gibbons are more closely related to humans than monkeys are because the gibbon β-globin sequence is a closer match with the human sequence.
40 38. What other evidence could you use to analyze evolutionary relatedness among gibbons, monkeys, and humans? A. the amino acid sequences of other proteins from gibbons, monkeys, and humans B. the amount of habitat overlap among gibbons, monkeys, and humans C. the β-globin amino acid sequence from gorillas D. the frequency of albinism (mutants that lack hair and skin pigment) in populations of gibbons, monkeys, and humans
Lecture Overview. Hydrogen Bonds. Special Properties of Water Molecules. Universal Solvent. ph Scale Illustrated. special properties of water
Lecture Overview special properties of water > water as a solvent > ph molecules of the cell > properties of carbon > carbohydrates > lipids > proteins > nucleic acids Hydrogen Bonds polarity of water
BIOLOGICAL MOLECULES OF LIFE
BIOLOGICAL MOLECULES OF LIFE C A R B O H Y D R A T E S, L I P I D S, P R O T E I N S, A N D N U C L E I C A C I D S The Academic Support Center @ Daytona State College (Science 115, Page 1 of 29) Carbon
Chapter 3 Molecules of Cells
Bio 100 Molecules of cells 1 Chapter 3 Molecules of Cells Compounds containing carbon are called organic compounds Molecules such as methane that are only composed of carbon and hydrogen are called hydrocarbons
Carbohydrates, proteins and lipids
Carbohydrates, proteins and lipids Chapter 3 MACROMOLECULES Macromolecules: polymers with molecular weights >1,000 Functional groups THE FOUR MACROMOLECULES IN LIFE Molecules in living organisms: proteins,
Chemical Basis of Life Module A Anchor 2
Chemical Basis of Life Module A Anchor 2 Key Concepts: - Water is a polar molecule. Therefore, it is able to form multiple hydrogen bonds, which account for many of its special properties. - Water s polarity
How To Understand The Chemistry Of Organic Molecules
CHAPTER 3 THE CHEMISTRY OF ORGANIC MOLECULES 3.1 Organic Molecules The chemistry of carbon accounts for the diversity of organic molecules found in living things. Carbon has six electrons, four of which
Elements in Biological Molecules
Chapter 3: Biological Molecules 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic Acids Elements in Biological Molecules Biological macromolecules are made almost entirely of just 6 elements: Carbon (C)
A disaccharide is formed when a dehydration reaction joins two monosaccharides. This covalent bond is called a glycosidic linkage.
CH 5 Structure & Function of Large Molecules: Macromolecules Molecules of Life All living things are made up of four classes of large biological molecules: carbohydrates, lipids, proteins, and nucleic
The Molecules of Life - Overview. The Molecules of Life. The Molecules of Life. The Molecules of Life
The Molecules of Life - Overview The Molecules of Life The Importance of Carbon Organic Polymers / Monomers Functions of Organic Molecules Origin of Organic Molecules The Molecules of Life Water is the
Chapter 2. The Chemistry of Life Worksheets
Chapter 2 The Chemistry of Life Worksheets (Opening image courtesy of David Iberri, http://en.wikipedia.org/wiki/file:camkii.png, and under the Creative Commons license CC-BY-SA 3.0.) Lesson 2.1: Matter
The Molecules of Cells
The Molecules of Cells I. Introduction A. Most of the world s population cannot digest milk-based foods. 1. These people are lactose intolerant because they lack the enzyme lactase. 2. This illustrates
Chapter 5. The Structure and Function of Macromolecule s
Chapter 5 The Structure and Function of Macromolecule s Most Macromolecules are polymers: Polymer: (poly: many; mer: part) Large molecules consisting of many identical or similar subunits connected together.
Chapter 3: Biological Molecules. 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic Acids
Chapter 3: Biological Molecules 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic Acids Elements in Biological Molecules Biological macromolecules are made almost entirely of just 6 elements: Carbon (C)
1. The diagram below represents a biological process
1. The diagram below represents a biological process 5. The chart below indicates the elements contained in four different molecules and the number of atoms of each element in those molecules. Which set
4. Which carbohydrate would you find as part of a molecule of RNA? a. Galactose b. Deoxyribose c. Ribose d. Glucose
1. How is a polymer formed from multiple monomers? a. From the growth of the chain of carbon atoms b. By the removal of an OH group and a hydrogen atom c. By the addition of an OH group and a hydrogen
Disaccharides consist of two monosaccharide monomers covalently linked by a glycosidic bond. They function in sugar transport.
1. The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism s cells. As a basis for understanding this concept: 1.
The Structure and Function of Macromolecules: Carbohydrates, Lipids & Phospholipids
The Structure and Function of Macromolecules: Carbohydrates, Lipids & Phospholipids The FOUR Classes of Large Biomolecules All living things are made up of four classes of large biological molecules: Carbohydrates
Chapter 5: The Structure and Function of Large Biological Molecules
Name Period Concept 5.1 Macromolecules are polymers, built from monomers 1. The large molecules of all living things fall into just four main classes. Name them. 2. Circle the three classes that are called
Biological molecules:
Biological molecules: All are organic (based on carbon). Monomers vs. polymers: Monomers refer to the subunits that, when polymerized, make up a larger polymer. Monomers may function on their own in some
Organic Compounds. Essential Questions: What is Organic? What are the 4 major Organic Compounds? How are they made? What are they used for?
Organic Compounds Essential Questions: What is Organic? What are the 4 major Organic Compounds? How are they made? What are they used for? Aristotle: Francesco Redi: What do we already know? Spontaneous
Macromolecules 1 Carbohydrates, Lipids & Nucleic Acids
VEA Bringing Learning to Life Program Support Notes Macromolecules 1 Carbohydrates, Lipids & Nucleic Acids Grades 10 - College 25mins Teacher Notes by Sue Wright, B. Sc., Dip. Ed. Produced by VEA Pty Ltd
Proteins and Nucleic Acids
Proteins and Nucleic Acids Chapter 5 Macromolecules: Proteins Proteins Most structurally & functionally diverse group of biomolecules. : o Involved in almost everything o Enzymes o Structure (keratin,
Biochemistry of Cells
Biochemistry of Cells 1 Carbon-based Molecules Although a cell is mostly water, the rest of the cell consists mostly of carbon-based molecules Organic chemistry is the study of carbon compounds Carbon
Name: Hour: Elements & Macromolecules in Organisms
Name: Hour: Elements & Macromolecules in Organisms Most common elements in living things are carbon, hydrogen, nitrogen, and oxygen. These four elements constitute about 95% of your body weight. All compounds
Carbon-organic Compounds
Elements in Cells The living substance of cells is made up of cytoplasm and the structures within it. About 96% of cytoplasm and its included structures are composed of the elements carbon, hydrogen, oxygen,
I. Chapter 5 Summary. II. Nucleotides & Nucleic Acids. III. Lipids
I. Chapter 5 Summary A. Simple Sugars (CH 2 O) n : 1. One C contains a carbonyl (C=O) rest contain - 2. Classification by functional group: aldoses & ketoses 3. Classification by number of C's: trioses,
Lab 3 Organic Molecules of Biological Importance
Name Biology 3 ID Number Lab 3 Organic Molecules of Biological Importance Section 1 - Organic Molecules Section 2 - Functional Groups Section 3 - From Building Blocks to Macromolecules Section 4 - Carbohydrates
3120-1 - Page 1. Name:
Name: 1) Which series is arranged in correct order according to decreasing size of structures? A) DNA, nucleus, chromosome, nucleotide, nitrogenous base B) chromosome, nucleus, nitrogenous base, nucleotide,
Chapter 3: Water and Life
Name Period Chapter 3: Water and Life Concept 3.1 Polar covalent bonds in water result in hydrogen bonding 1. Study the water molecules at the right. On the central molecule, label oxygen (O) and hydrogen
Chapter 2 Chemical Principles
Chapter 2 Chemical Principles I. Chemistry. [Students should read this section on their own]. a. Chemistry is the study of the interactions between atoms and molecules. b. The atom is the smallest unit
IV. -Amino Acids: carboxyl and amino groups bonded to -Carbon. V. Polypeptides and Proteins
IV. -Amino Acids: carboxyl and amino groups bonded to -Carbon A. Acid/Base properties 1. carboxyl group is proton donor! weak acid 2. amino group is proton acceptor! weak base 3. At physiological ph: H
Chemical Bonds. Chemical Bonds. The Nature of Molecules. Energy and Metabolism < < Covalent bonds form when atoms share 2 or more valence electrons.
The Nature of Molecules Chapter 2 Energy and Metabolism Chapter 6 Chemical Bonds Molecules are groups of atoms held together in a stable association. Compounds are molecules containing more than one type
Chapter 5: The Structure and Function of Large Biological Molecules
Name Period Chapter 5: The Structure and Function of Large Biological Molecules Concept 5.1 Macromolecules are polymers, built from monomers 1. The large molecules of all living things fall into just four
BIOMOLECULES. reflect
reflect A child s building blocks are relatively simple structures. When they come together, however, they can form magnifi cent structures. The elaborate city scene to the right is made of small, simple
Elements & Macromolecules in Organisms
Name: Date: Per: Table # Elements & Macromolecules in rganisms Most common elements in living things are carbon, hydrogen, nitrogen, and oxygen. These four elements constitute about 95% of your body weight.
Anatomy and Physiology Placement Exam 2 Practice with Answers at End!
Anatomy and Physiology Placement Exam 2 Practice with Answers at End! General Chemical Principles 1. bonds are characterized by the sharing of electrons between the participating atoms. a. hydrogen b.
Organic Molecules of Life - Exercise 2
Organic Molecules of Life - Exercise 2 Objectives -Know the difference between a reducing sugar and a non-reducing sugar. -Distinguish Monosaccharides from Disaccharides and Polysaccharides -Understand
WATER CHAPTER 3 - BIOCHEMISTRY "THE CHEMISTRY OF LIFE" POLARITY HYDROGEN BONDING
CHAPTER 3 - BIOCHEMISTRY "THE CHEMISTRY OF LIFE" WATER Compare the body of the jellyfish with our own bodies. The jellyfish will die if it is removed from its water environment, yet we can live in the
Recognizing Organic Molecules: Carbohydrates, Lipids and Proteins
Recognizing Organic Molecules: Carbohydrates, Lipids and Proteins Oct 15 8:05 PM What is an Organic Molecule? An Organic Molecule is a molecule that contains carbon and hydrogen and oxygen Carbon is found
Preliminary MFM Quiz
Preliminary MFM Quiz 1. The major carrier of chemical energy in all cells is: A) adenosine monophosphate B) adenosine diphosphate C) adenosine trisphosphate D) guanosine trisphosphate E) carbamoyl phosphate
ATOMS AND BONDS. Bonds
ATOMS AND BONDS Atoms of elements are the simplest units of organization in the natural world. Atoms consist of protons (positive charge), neutrons (neutral charge) and electrons (negative charge). The
Keystone Review Practice Test Module A Cells and Cell Processes. 1. Which characteristic is shared by all prokaryotes and eukaryotes?
Keystone Review Practice Test Module A Cells and Cell Processes 1. Which characteristic is shared by all prokaryotes and eukaryotes? a. Ability to store hereditary information b. Use of organelles to control
1. When applying the process of science, which of these is tested? a. an observation b. a result c. a hypothesis d. a question e.
BCOR 11 Exam 1, 2004 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. When applying the process of science, which of these is tested? a. an observation
Carbohydrates Lipids Proteins Nucleic Acids
Carbohydrates Lipids Proteins Nucleic Acids Carbon The element of life! All living things contain the element carbon. Organic means it contains carbon The reason for this is because of carbon s ability
The molecules of life. The molecules that make up living things are really big They are called macromolecules
Food Labels All living things use materials and energy Our food comes from living things The food labels we see show us what our food is made of The stuff we are studying today can be found on food labels
Chemical Bonds and Groups - Part 1
hemical Bonds and Groups - Part 1 ARB SKELETS arbon has a unique role in the cell because of its ability to form strong covalent bonds with other carbon atoms. Thus carbon atoms can join to form chains.
10.1 The function of Digestion pg. 402
10.1 The function of Digestion pg. 402 Macromolecules and Living Systems The body is made up of more than 60 % water. The water is found in the cells cytoplasm, the interstitial fluid and the blood (5
The polarity of water molecules results in hydrogen bonding [3]
![The polarity of water molecules results in hydrogen bonding [3]](/thumbs/40/21376601.jpg "The polarity of water molecules results in hydrogen bonding [3]")
GUIDED READING - Ch. 3 PROPERTIES OF WATER NAME: Please print out these pages and HANDWRITE the answers directly on the printouts. Typed work or answers on separate sheets of paper will not be accepted.
Ms. Campbell Protein Synthesis Practice Questions Regents L.E.
Name Student # Ms. Campbell Protein Synthesis Practice Questions Regents L.E. 1. A sequence of three nitrogenous bases in a messenger-rna molecule is known as a 1) codon 2) gene 3) polypeptide 4) nucleotide
Ch18_PT MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Ch18_PT MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) All of the following can be classified as biomolecules except A) lipids. B) proteins. C)
Molecular Models in Biology
Molecular Models in Biology Objectives: After this lab a student will be able to: 1) Understand the properties of atoms that give rise to bonds. 2) Understand how and why atoms form ions. 3) Model covalent,
AP BIOLOGY 2008 SCORING GUIDELINES
AP BIOLOGY 2008 SCORING GUIDELINES Question 1 1. The physical structure of a protein often reflects and affects its function. (a) Describe THREE types of chemical bonds/interactions found in proteins.
H H N - C - C 2 R. Three possible forms (not counting R group) depending on ph
Amino acids - 0 common amino acids there are others found naturally but much less frequently - Common structure for amino acid - C, -N, and functional groups all attached to the alpha carbon N - C - C
Name Date Period. 2. When a molecule of double-stranded DNA undergoes replication, it results in
DNA, RNA, Protein Synthesis Keystone 1. During the process shown above, the two strands of one DNA molecule are unwound. Then, DNA polymerases add complementary nucleotides to each strand which results
2007 7.013 Problem Set 1 KEY
2007 7.013 Problem Set 1 KEY Due before 5 PM on FRIDAY, February 16, 2007. Turn answers in to the box outside of 68-120. PLEASE WRITE YOUR ANSWERS ON THIS PRINTOUT. 1. Where in a eukaryotic cell do you
Shu-Ping Lin, Ph.D. E-mail: splin@dragon.nchu.edu.tw
Amino Acids & Proteins Shu-Ping Lin, Ph.D. Institute te of Biomedical Engineering ing E-mail: splin@dragon.nchu.edu.tw Website: http://web.nchu.edu.tw/pweb/users/splin/ edu tw/pweb/users/splin/ Date: 10.13.2010
A. A peptide with 12 amino acids has the following amino acid composition: 2 Met, 1 Tyr, 1 Trp, 2 Glu, 1 Lys, 1 Arg, 1 Thr, 1 Asn, 1 Ile, 1 Cys
Questions- Proteins & Enzymes A. A peptide with 12 amino acids has the following amino acid composition: 2 Met, 1 Tyr, 1 Trp, 2 Glu, 1 Lys, 1 Arg, 1 Thr, 1 Asn, 1 Ile, 1 Cys Reaction of the intact peptide
The Properties of Water (Instruction Sheet)
The Properties of Water (Instruction Sheet) Property : High Polarity Activity #1 Surface Tension: PILE IT ON. Materials: 1 DRY penny, 1 eye dropper, water. 1. Make sure the penny is dry. 2. Begin by estimating
CHEM 121. Chapter 19, Name: Date:
CHEM 121. Chapter 19, Name: Date: 1. A lipid is any substance of biochemical origin that is A) soluble in water but insoluble in nonpolar solvents B) insoluble in both water and nonpolar solvents C) insoluble
Cellular Respiration: Practice Questions #1
Cellular Respiration: Practice Questions #1 1. Which statement best describes one of the events taking place in the chemical reaction? A. Energy is being stored as a result of aerobic respiration. B. Fermentation
Phase diagram of water. Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure.
Phase diagram of water Note: for H 2 O melting point decreases with increasing pressure, for CO 2 melting point increases with increasing pressure. WATER Covers ~ 70% of the earth s surface Life on earth
Proteins. Proteins. Amino Acids. Most diverse and most important molecule in. Functions: Functions (cont d)
Proteins Proteins Most diverse and most important molecule in living i organisms Functions: 1. Structural (keratin in hair, collagen in ligaments) 2. Storage (casein in mother s milk) 3. Transport (HAEMOGLOBIN!)
Examination One. Biology 101. Dr. Jaeson T. Fournier
Examination One Biology 101 Dr. Jaeson T. Fournier Examination Instructions: Answers are to be indicated on a scantron. Keep your work protected! This helps prevent dishonesty. The instructor will not
PRACTICE TEST QUESTIONS
PART A: MULTIPLE CHOICE QUESTIONS PRACTICE TEST QUESTIONS DNA & PROTEIN SYNTHESIS B 1. One of the functions of DNA is to A. secrete vacuoles. B. make copies of itself. C. join amino acids to each other.
a. pure substance b. composed of combinations of atoms c. held together by chemical bonds d. substance that cannot be broken down into simpler units
Chemical Bonds 1. Which of the following is NOT a true compound? a. pure substance b. composed of combinations of atoms c. held together by chemical bonds d. substance that cannot be broken down into simpler
Water. Definition: A mole (or mol ) Water can IONIZE transiently. NONpolar covalent molecules do not dissolve in water + + + + + + + + + + + + + + + +
Today s Topics Polar Covalent Bonds ydrogen bonding Properties of water p Water C bonds are Nonpolar Will these molecules dissolve in water? Start Macromolecules Carbohydrates & Lipids Sept 4, 05 Why are
Molecular Cell Biology
Harvey Lodish Arnold Berk Paul Matsudaira Chris A. Kaiser Monty Krieger Matthew P. Scott Lawrence Zipursky James Darnell Molecular Cell Biology Fifth Edition Chapter 2: Chemical Foundations Copyright 2004
Worksheet 13.1. Chapter 13: Human biochemistry glossary
Worksheet 13.1 Chapter 13: Human biochemistry glossary α-helix Refers to a secondary structure of a protein where the chain is twisted to form a regular helix, held by hydrogen bonds between peptide bonds
1.1.2. thebiotutor. AS Biology OCR. Unit F211: Cells, Exchange & Transport. Module 1.2 Cell Membranes. Notes & Questions.
thebiotutor AS Biology OCR Unit F211: Cells, Exchange & Transport Module 1.2 Cell Membranes Notes & Questions Andy Todd 1 Outline the roles of membranes within cells and at the surface of cells. The main
Structures of Proteins. Primary structure - amino acid sequence
Structures of Proteins Primary structure - amino acid sequence Secondary structure chain of covalently linked amino acids folds into regularly repeating structures. Secondary structure is the result of
Pipe Cleaner Proteins. Essential question: How does the structure of proteins relate to their function in the cell?
Pipe Cleaner Proteins GPS: SB1 Students will analyze the nature of the relationships between structures and functions in living cells. Essential question: How does the structure of proteins relate to their
How To Understand The Human Body
Introduction to Biology and Chemistry Outline I. Introduction to biology A. Definition of biology - Biology is the study of life. B. Characteristics of Life 1. Form and size are characteristic. e.g. A
Enzymes: Practice Questions #1
Enzymes: Practice Questions #1 1. Compound X increases the rate of the reaction below. Compound X is most likely A. an enzyme B. a lipid molecule C. an indicator D. an ADP molecule 2. The equation below
Chapter 5 Student Reading
Chapter 5 Student Reading THE POLARITY OF THE WATER MOLECULE Wonderful water Water is an amazing substance. We drink it, cook and wash with it, swim and play in it, and use it for lots of other purposes.
The Properties of Water
1 Matter & Energy: Properties of Water, ph, Chemical Reactions EVPP 110 Lecture GMU Dr. Largen Fall 2003 2 The Properties of Water 3 Water - Its Properties and Its Role in the Fitness of Environment importance
Chapter 5 Classification of Organic Compounds by Solubility
Chapter 5 Classification of Organic Compounds by Solubility Deductions based upon interpretation of simple solubility tests can be extremely useful in organic structure determination. Both solubility and
DNA Replication & Protein Synthesis. This isn t a baaaaaaaddd chapter!!!
DNA Replication & Protein Synthesis This isn t a baaaaaaaddd chapter!!! The Discovery of DNA s Structure Watson and Crick s discovery of DNA s structure was based on almost fifty years of research by other
Nucleotides and Nucleic Acids
Nucleotides and Nucleic Acids Brief History 1 1869 - Miescher Isolated nuclein from soiled bandages 1902 - Garrod Studied rare genetic disorder: Alkaptonuria; concluded that specific gene is associated
Biological Molecules
Biological Molecules I won t lie. This is probably the most boring topic you have ever done in any science. It s pretty much as simple as this: learn the material deal with it. Enjoy don t say I didn t
8/20/2012 H C OH H R. Proteins
Proteins Rubisco monomer = amino acids 20 different amino acids polymer = polypeptide protein can be one or more polypeptide chains folded & bonded together large & complex 3-D shape hemoglobin Amino acids
Chapter 12 - Proteins
Roles of Biomolecules Carbohydrates Lipids Proteins 1) Catalytic 2) Transport 3) Regulatory 4) Structural 5) Contractile 6) Protective 7) Storage Nucleic Acids 12.1 -Amino Acids Chapter 12 - Proteins Amino
6023-1 - Page 1. Name: 4) The diagram below represents a beaker containing a solution of various molecules involved in digestion.
Name: 6023-1 - Page 1 1) Which one of the following situations indicates a serious organ system malfunction? A) Mitochondria stop functioning in a unicellular organism exposed to pollutants. B) White blood
Exam 4 Outline CH 105 Spring 2012
Exam 4 Outline CH 105 Spring 2012 You need to bring a pencil and your ACT card. Chapter 24: Lipids 1. Describe the properties and types of lipids a. All are hydrophobic b. Fatty acid-based typically contain
Molecular Genetics. RNA, Transcription, & Protein Synthesis
Molecular Genetics RNA, Transcription, & Protein Synthesis Section 1 RNA AND TRANSCRIPTION Objectives Describe the primary functions of RNA Identify how RNA differs from DNA Describe the structure and
Unit 2: Cells, Membranes and Signaling CELL MEMBRANE. Chapter 5 Hillis Textbook
Unit 2: Cells, Membranes and Signaling CELL MEMBRANE Chapter 5 Hillis Textbook HOW DOES THE LAB RELATE TO THE NEXT CHAPTER? SURFACE AREA: the entire outer covering of a cell that enables materials pass.
Advanced Medicinal & Pharmaceutical Chemistry CHEM 5412 Dept. of Chemistry, TAMUK
Advanced Medicinal & Pharmaceutical Chemistry CHEM 5412 Dept. of Chemistry, TAMUK Dai Lu, Ph.D. dlu@tamhsc.edu Tel: 361-221-0745 Office: RCOP, Room 307 Drug Discovery and Development Drug Molecules Medicinal
CSC 2427: Algorithms for Molecular Biology Spring 2006. Lecture 16 March 10
CSC 2427: Algorithms for Molecular Biology Spring 2006 Lecture 16 March 10 Lecturer: Michael Brudno Scribe: Jim Huang 16.1 Overview of proteins Proteins are long chains of amino acids (AA) which are produced
Lipids. Classes of Lipids. Types of Lipids. Saturated and Unsaturated Fatty Acids. Fatty Acids. 15.1 Lipids 15.2 Fatty Acids
hapter 15 15.1 15.2 Fatty Acids are biomolecules that contain fatty acids or a steroid nucleus. soluble in organic solvents, but not in water. named for the Greek word lipos, which means fat. extracted
18.2 Protein Structure and Function: An Overview
18.2 Protein Structure and Function: An Overview Protein: A large biological molecule made of many amino acids linked together through peptide bonds. Alpha-amino acid: Compound with an amino group bonded
McMush. Testing for the Presence of Biomolecules
Biology McMush Testing for the Presence of Biomolecules MATERIALS AND RESOURCES EACH GROUP aprons beaker, 250 ml 2 clamps, test tube goggles graduated cylinder, 50 ml paper towels test tube brush test
Ionization of amino acids
Amino Acids 20 common amino acids there are others found naturally but much less frequently Common structure for amino acid COOH, -NH 2, H and R functional groups all attached to the a carbon Ionization
Non-Covalent Bonds (Weak Bond)
Non-Covalent Bonds (Weak Bond) Weak bonds are those forces of attraction that, in biological situations, do not take a large amount of energy to break. For example, hydrogen bonds are broken by energies
Chemistry Diagnostic Questions
Chemistry Diagnostic Questions Answer these 40 multiple choice questions and then check your answers, located at the end of this document. If you correctly answered less than 25 questions, you need to
Built from 20 kinds of amino acids
Built from 20 kinds of amino acids Each Protein has a three dimensional structure. Majority of proteins are compact. Highly convoluted molecules. Proteins are folded polypeptides. There are four levels
THE HISTORY OF CELL BIOLOGY
SECTION 4-1 REVIEW THE HISTORY OF CELL BIOLOGY Define the following terms. 1. cell 2. cell theory Write the correct letter in the blank. 1. One early piece of evidence supporting the cell theory was the
Chapter 2 The Chemical Context of Life
Chapter 2 The Chemical Context of Life Multiple-Choice Questions 1) About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living
Regents Biology REGENTS REVIEW: PROTEIN SYNTHESIS
Period Date REGENTS REVIEW: PROTEIN SYNTHESIS 1. The diagram at the right represents a portion of a type of organic molecule present in the cells of organisms. What will most likely happen if there is
Biochemistry - I. Prof. S. Dasgupta Department of Chemistry Indian Institute of Technology, Kharagpur Lecture-11 Enzyme Mechanisms II
Biochemistry - I Prof. S. Dasgupta Department of Chemistry Indian Institute of Technology, Kharagpur Lecture-11 Enzyme Mechanisms II In the last class we studied the enzyme mechanisms of ribonuclease A
2. Which type of macromolecule contains high-energy bonds and is used for long-term energy storage?
Energy Transport Study Island 1. During the process of photosynthesis, plants use energy from the Sun to convert carbon dioxide and water into glucose and oxygen. These products are, in turn, used by the
Photosynthesis and Cellular Respiration. Stored Energy
Photosynthesis and Cellular Respiration Stored Energy What is Photosynthesis? plants convert the energy of sunlight into the energy in the chemical bonds of carbohydrates sugars and starches. SUMMARY EQUATION: