The Flow of Matter and Energy in the Living World: Photosynthesis and Cell Respiration

Transcription

1 The Flow of Matter and Energy in the Living World: Photosynthesis and Cell Respiration from the Teacher s Guide

2 The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from Biology: The Science of Life Series Video Produced by Ancient Lights Educational Media Teacher s Guide Written by Joseph Sitko, Ph.D. Published and Distributed by AGC/United Learning 1560 Sherman Avenue, Suite 100 Evanston, IL FAX info@agcunited.com

3 This video is the exclusive property of the copyright holder. Copying, transmitting, or reproducing in any form, or by any means, without prior written permission from the copyright holder is prohibited (Title 17, U.S. Code Sections 501 and 506). MMI Ancient Lights Educational Media

4 Contents Introduction and Summary 1 Links to Curriculum Standards 1 Teacher Preparation/Instructional Notes 2 Student Preparation 3 Student Objectives 3 Introducing the Video 3 Follow-Up Discussion 4 Extended Learning Activities 4 Description of Blackline Masters 5 Answer Key 5 Script of Video Narration 7 This video is closed captioned The purchase of this video program entitles the user to the right to reproduce or duplicate, in whole or in part, this teacher s guideand the blackline master handouts that accompany it for the purpose of teaching in conjunction with this video, The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration. This right is restricted only for use with this videoprogram. Any reproduction or duplication in whole or in part of this guide and the blackline master handouts for any purpose other than for use with this video program is prohibited.

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6 THE FLOW OF MATTER AND ENERGY AGC/United Learning 1560 Sherman Ave., Suite 100 Evanston, IL IN THE LIVING WORLD: Photosynthesis and Cellular Respiration Program Two from Biology: The Science of Life Series Grades 5-9 Viewing Time: 14 minutes with a one-minute, five-question Video Quiz INTRODUCTION AND SUMMARY By focusing on photosynthesis, cellular respiration, and food chains, this program offers a look at how matter and energy flow through the living world. The program is introduced with a review of basic concepts, such as matter, energy, elements, atoms, molecules, chemical bonds, chemical compounds, chemical reactions, and chemical equations. LINKS TO CURRICULUM STANDARDS The design of this program was guided by the curriculum standards of the states of Texas, California, and Illinois. The American Association for the Advancement of Science recommendations for improving biological science content were followed throughout this series, Biology: The Science of Life. In accordance with these guide- lines, we have attempted to help students: 1. Understand the biochemical basis of the two most important metabolic processes that occur in living things: photosynthesis and cellular respiration. 2. Understand the basic concepts of chemistry needed to study biology. 3. Recognize and investigate problems and proposed solutions based on reason, experimentation, and evidence. 1

7 4. Express and interpret information and ideas. 5. Use computer networks to access information. 6. Relate biological science to everyday life experience. TEACHER PREPA R AT I O N / I N S T R U C T I O N A LN O T E S Before presenting this lesson to your students, we suggest that you review the processes of photosynthesis and cellular respiration. We also advise you to preview the video and review the guide and accompanying blackline masters in order to familiarize yourself with their content. As you review the materials presented in this guide, you may find it necessary to make some changes, additions, or deletions to meet the specific needs of your class. We encourage you to do so, for only by tailoring this program to your class will they obtain the maximum instructional benefits afforded by the materials. It is also suggested that the video presentation take place before the entire group under your supervision. The lesson activities grow out of the context of the video; therefore, the presentation should be a common experience for all students. You should also duplicate selected "hand out" materials from the blackline masters included in this guide. An optional pre-test is provided on Blackline Master 1, Pre- Test. This test will help you determine the level of student comprehension prior to participating in the lesson. An Answer Key begins on page 5 of this guide. Set up a "Learning Center" with photographs, living materials, and examples that depict the characteristics of matter and energy, atoms, molecules, chemical compounds, chemical reactions, photosynthesis, and cellular respiration. 2

8 STUDENT PREPARATION Before viewing The Flow of Matter and Energy: Photosynthesis and Cellular Respiration: 1. Have students explore the "Learning Center. 2. Introduce or review with your students the meaning of important words and terms from Blackline Masters 2 and 3, Vocabulary. In order to succeed at biology, students will need to fully understand the meaning of basic concepts such as atom, element, matter, energy, molecule, chemical bond, subatomic particles, chemical reaction, chemical formula, and chemical equation. STUDENT OBJECTIVES After viewing the video and participating in the follow-up activities, students should be able to Compare and contrast the overall chemical reactions for photosynthesis and cellular respiration. Describe the biological significance of photosynthesis. Describe the biological significance of cellular respiration. Discuss the way food chains work. Define and use and the scientific vocabulary of this program. INTRODUCING THE VIDEO Distribute Blackline Master 4, Crossword Puzzle, and Blackline Master 6, Video Quiz. 3

9 Present the video. The viewing time is 14 minutes followed by an optional one-minute, five-question video quiz. FOLLOW-UP DISCUSSION It is recommended that you involve students in a discussion after viewing the video and before beginning the Follow-Up Activities. Introduce the following questions. 1. Discuss the thermonuclear fusion reactions that occur in the sun. Describe how elements are formed by nuclear fusion. 2. Briefly discuss the concept of E=mc Discuss how oxygen is produced by photosynthetic organisms and how it is used by living things. 5. Discuss the concept of metabolism. EXTENDED LEARNING ACTIVITIES A. In order to express and communicate ideas and improve research skills, use the Internet and other resources to prepare papers or oral reports on the following subjects: 1. Matter and energy from the point of view of Albert Einstein's famous equation E=mc A detailed look at photosynthesis. 3. A detailed look at cellular respiration. 4. The role of ATP in the living world. 5. The role of photosynthesis in the maintenance of the earth's atmosphere, including its effect on global warming. 6. The form of oxygen known as ozone; ozone as pollution; the protective layer of ozone; the ozone hole and how it may affect life on earth. 7. The structure of atoms: elements and subatomic particles. 4

10 DESCRIPTION OF BLACKLINE MASTERS Blackline Master 1, is a Pre-Test, that when compared to the Post-Test results, will help you gauge student progress. Blackline Masters 2 and 3, Vocabulary and Vocabulary Activity will introduce students to unfamiliar words used in the program, or words pertaining to the subject of the program they may encounter in outside reading. Blackline Master 4, Crossword Puzzle, challenges students to use some of the words from the vocabulary list. Blackline Master 5, Post-Test, may be used for evaluating student progress. Blackline Master 6, is a printed version of the Video Quiz that appears at the end of this program. The video quiz encourages attentiveness and tests information retention. ANSWER KEY Blackline Master 1, Pre-Test 1. False, only photosynthetic organisms can capture sunlight. 2. True 3. True 4. True 5. False, energy doesn't occupy space. Blackline Master 3, Vocabulary Activity 1. atom 2. chemical compound 3. photosynthesis 4. molecules 5

11 5. bacteria, fungi Blackline Master 4, Crossword Puzzle Blackline Master 5, Post-Test 1. 6C0 2 +6H 2 0+ ENERGY OF SUNLIGHT (in the presence of chlorophyll)= C 6 H (Glucose)+6O 2 Carbon dioxide and water are chemically combined in organisms that possess chlorophyll using the energy of sunlight to produce glucose and oxygen. The sun's energy ends up in the chemical bonds of glucose. 2.C 6 H 12 O 6 (Glucose)+6O 2 =6CO 2 +6H 2 O+Energy (36ATP) Glucose and oxygen are chemically combined in living cells to produce carbon dioxide and water. Energy is released by breaking down glucose that ends up in molecules of ATP. 3. a. atom: The smallest particle of an element. b. element: A pure form of matter that cannot be separated by chemical means into other substances. c. chemical reactions: Changes of matter in which chemical bonds are broken, rearranged, and then reformed. d. molecule: A chemical substance formed when the atoms of one or more elements are chemically bonded together. 6

12 e.subatomic particles: The particles that make up an atom. Protons, neutrons, and electrons are subatomic particles. Blackline Master 6, Video Quiz 1. TRUE 2. FALSE; atoms are made from subatomic particles and molecules are made from atoms. 3. FALSE; chorophyll is needed for photosynthesis. 4. TRUE 5. TRUE Script of Video Narration: THE FLOW OF MATTER AND ENERGY: Photosynthesis and Cellular Respiration Living things cannot exist without a source of energy to power their life processes and, with just a few small exceptions, all of that energy is created by powerful thermonuclear reactions in the sun. The heat and light produced by the sun travels through space and reaches the earth.through a process called photosynthesis, the energy of sunlight is chemically captured and stored by plants and plant-like organisms. Then, through another process called cellular respiration, the stored energy is released inside living cells and used in countless different ways. Now let us look at the two basic ingrediants of the universe, matter and energy, and learn how they flow through the living world. MATTER AND ENERGY The first ingrediant, matter, is defined as anything that has mass (or weight), and that occupies space. This means that everything seen here the water, the rocks, the grass, and even the air are matter because each of these things has weight and takes up space. These examples show that matter can exist in any one of three very different states: liquid, solid or gas. 7

13 At normal temperatures and atmospheric pressures water is a liquid that can flow and be poured. At lower temperatures, liquid water becomes the hard, brittle, solid we call ice, while at higher temperatures, it turns into steam; a floating gas of no particular shape. In contrast to matter, the second basic ingrediant of the universe, energy, has no weight and doesn't occupy space. Scientists define energy as the ability to do work or cause change. This means that it is energy that makes matter do things. There are several different kinds of energy. For example there is the mechanical energy of falling water, and the heat energy and light energy of a burning fire, while living things use chemical energy for everything from making their hearts beat, to breathing, to jumping. And it s amazing to think that nearly all of the chemical energy used by living things was, at one time, sunlight. CHEMICAL BONDS, ELEMENTS, ATOMS, & COMPOUNDS Chemical energy is stored in the chemical bonds that hold much of matter together. For example, strong chemical bonds hold the matter of water together. The chemical formula of water, H 2 O, shows that it contains two elements of matter. One is the element hydogen, represented by the letter "H." The second is the element oxygen, represented by the letter "O." The formula also shows that there is twice as much hydrogen in water as oxygen. Elements are pure types of matter that cannot be chemically separated into different substances. Ninety-two (92) elements of matter can be found in nature. Familiar examples of elements include silver, copper, helium, and gold. The smallest particle of an element is an atom and all atoms are made from the same three subatomic particles: 8

14 protons, neutrons and the electrsons which are used in chemical bonding. Different elements possess different numbers of subatomic particles and as a result, each element has different properties. When the atoms of two or more elements are chemically bonded together, chemical compounds are formed. For example: One atom of oxygen chemically bonded to two atoms of hydrogen is the chemical compound called water. It is important to note that chemical compounds have very different characteristics from those of the elements they contain: For example at ordinary temperatures and pressures water is a liquid yet under the same conditions both the hydrogen and oxygen from which it was formed are gases. Likewise, you would never suspect that the colorless gas inside soda bubbles contains carbon, an element that normally exists as a black solid. Soda-bubble gas is a chemical compound called carbon dioxide and is represented by the chemical formula CO 2. This formula shows that carbon dioxide contains one atom of carbon bonded to two atoms of oxygen. MOLECULES On earth atoms are almost always found attached to other atoms forming what scientists call molecules. Molecules are combinations of atoms of one or more elements of matter joined together by strong chemical bonds. The DNA molecules found in living things are the most complicated molecules and can contain millions of atoms but there are many common molecules that have just a few atoms. For example just two atoms of hydrogen bonded together makes a molecule of hydrogen gas which is represented by the formula H 2. Likewise, most of the oxygen in the atmosphere exists as simple molecules made from only two oxygen atoms that are chemically bonded together and that are represented by the formula O 2. 9

15 CHEMICAL REACTIONS AND EQUATIONS Molecules are created and destroyed during what are called chemical reactions, which are changes of matter in which chemical bonds are broken, rearranged, and then reformed. Chemical reactions are occuring around us all the time: in fact each second literally millions of chemical reactions are occuring inside of every living thing. In order to show what happens during chemical reactions scientists write out equations like this one which represents the formation of water from hydrogen and oxygen: The reactants, two molecules of hydrogen gas plus one molecule of oxygen gas, are on the left side of the arrow. On the right side of the arrow are the products of the chemical reaction. In this reaction two molecules of water are formed plus energy is released. PHOTOSYNTHESIS: ENERGY FOR LIFE Of all the chemical reactions in the living world, perhaps none is as important as photosynthesis. Photosynthesis is a Greek word that means "to make from light" and by looking at its equation we will learn why it was given this name. During photosynthesis, carbon dioxide plus water are chemically combined, using energy from sunlight to make the sugar called glucose a chemical compound which ends up storing the sun's energy in its chemical bonds. The equation also shows another important fact: photosynthesis makes oxygen for organisms to use. But it is important to point out that you won't get glucose and oxygen just by mixing carbon dioxide and water together in the sunlight: all you will get is warm carbonated water. This is because photosynthesis only takes place in plants and plant-like organisms: those that possess the amazing light trapping molecule called chlorophyll. In fact without chlorophyll,which gives plants their greenish color, here can be no photosynthesis. Photosynthesis is extremely important because it is just about the only way that living things obtain both energy and oxygen: In fact without photosynthesis there would be no oxygen at all in our atmosphere. 10

16 FOOD CHAINS: THE FLOW OF MATTER AND ENER- GY IN THE LIVING WORLD Most species of living things, including all animals, are unable to carry out photosynthesis to make their own food. This means they must eat in order to obtain the energy they need. Living things feed on one another: As a result in the living world energy and matter are passed along through what are called food chains of organisms. The first link in any food chain are the food producers. They are photosynthetic organisms like plants. These organisms are able to produce food in the form of energyrich glucose from nonliving matter. The second link in a food chain are the primary consumers. They eat plants or other photosynthetic organisms: In this way both energy and matter begin to move up the food chain. Next are the secondary consumers. They eat the primary consumers. Oftentimes birds like these are secondary consumers because they eat insects and other organisms that live on a diet of plants. Then come the tertiary consumers, who eat the secondary consumers. Tertiary consumers are often large meat-eating animals like this alligator. The final link in a food chain are the decomposers. They are organisms such as fungi and bacteria like these. Decomposers cause decay. They break down dead materials and turn them into nutrients for the food producers. CELLULAR RESPIRATION: RELEASING ENERGY BY BREAKING DOWN GLUCOSE As we have learned, food producers, such as the greencolored algae seen here, make oxygen as well as glucose. Oxygen is extremely important to living things: but did you ever wonder why? The reason is that nearly all organisms, even ocean dwellers like these, must have oxygen to break down the chemical bonds of glucose to release its stored energy. The process by which this happens is called cellular respiration and its chemical reac- 11

17 tion is the exact opposite of the reaction for photosynthesis because the products of photosynthesis are the reactants of cellular respiration. The equation shows that when glucose reacts with oxygen the sugar is broken down into carbon dioxide and water and energy is released. Inside of living cells the energy released from glucose ends up being transfered to another chemical compound called A d e n o s i n e Triphosphate, or ATP, and it is ATP that is actually used whenever a cell needs immediate energy to power a life process. CONCLUSION The flow of matter and energy in the living world is beautifully balanced. Plants and plant-like organisms make oxygen and energy-rich food using just sunlight and the simple byproducts of cellular respiration: carbon dioxide and water. And through cellular respiration the oxygen and sugar made by photosynthesis ends up being used by all the different organisms in a food chain. It is thanks to these two amazing and complementary processes that life has been able to thrive on earth. Video Quiz 1. TRUE OR FALSE? Elements are pure types of matter. 2. TRUE OR FALSE? Atoms are made from molecules. 3. TRUE OR FALSE? Chlorophyll is needed for cellular respiration. 4. TRUE OR FALSE? Matter and energy flow through food chains. 5. TRUE OR FALSE? Chemical Compounds contain at least two types of atoms. 12

18 1 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Pre-Test Directions: Answer each question TRUE OR FALSE. 1. All living things are able to capture the energy of sunlight and use it to power their life processes. 2. Many animals exhale carbon dioxide, CO 2, as a waste product, but plants need CO 2 to live. 3. The oxygen in our atmosphere comes from plants. 4. Matter is always a lot heavier than energy. 5. Matter takes up less space than energy Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution

19 2 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Vocabulary List atom: The smallest particle of an element. ATP: Abbreviation for Adenosine Triphosphate, the chemical compound used by cells as a source of readily available energy. autotroph (auto-trof): An organism that makes its own food; a food producer. bacteria: Simple, one-celled, organisms that lack a nucleus. Bacteria are found almost everywhere on earth. Some cause disease while others are helpful. In food chains, bacteria play important roles as decomposers. carbon dioxide: A colorless, odorless gas abbreviated by the chemical formula CO 2. (This formula shows that one molecule of CO 2 has two atoms of oxygen and one of carbon.) Animals exhale carbon dioxide because it is a by-product of cellular respiration. Plants can use the sun's energy to combine carbon dioxide with water to make sugar. This is how plants convert the energy of sunlight into chemical energy: a process called photosynthesis. cell: The smallest structural unit or "building block" of life. cellular respiration (sell-you-lar res-per-a-shun): Cellular respiration occurs when glucose is broken down into carbon dioxide and water, and energy, in the form of ATP, is created. Aerobic cellular respiration uses oxygen. Anaerobic cellular respiration, or fermentation, does not require oxygen (certain yeasts and some bacteria use this method of incomplete cellular respiration to release stored energy). charactertistic: A distinctive feature; a trait. chemical: Chemicals are substances made from combinations of different elements. For example, glucose belong to a class of chemicals made from the elements carbon, oxygen, and hydrogen called sugars. chemical bonds: The way in which atoms connect to one another. For example, in water, an atom of oxygen is joined to two atoms of hydrogen by chemical bonds. The subatomic particles called electrons are responsible for creating chemical bonds. chemical energy: Energy stored in chemical bonds. chemical equation: A diagram that uses chemical formulas, numbers, and other symbols to describe what happens in a chemical reaction. chemical reactions: Events in which chemical bonds are broken, rearranged and reformed. Matter is changed by chemical reactions; this is what happens when chemical compounds react with one another and new compounds are formed. chlorophyll (klor-oh-fil): The light-trapping molecule found in plants and other food producers upon which photosynthesis depends. combustion: The process of burning is called combustion. If combustion is 100% effective, only carbon dioxide and water are produced and energy is released. These are the same products that are produced by cellular respiration which is, in fact, a biological process that strongly resembles combustion. c o m p l e m e n t a r y: Something that completes or makes perfect; two parts of a puzzle fit together to make a whole. They are complementary parts. In the same way, photosynthesis and cellular respiration are complementary to one another because the products of one reaction are the reactants of the other reaction. DNA: The abbreviation for Deoxyribonucleic Acid, a very large molecule that stores biological instructions. energy: The ability to do work or cause change. There are different types of energy such as light energy, heat energy, electrical energy, chemical energy, etc. electron: Subatomic particles of an atom that are used in chemical bonding. Electrons are negatively charged and they spin around the atomic nucleus. element: Pure forms of matter that cannot be separated chemically into other substances. There are 92 natural elements and more than ten manmade elements. Each element possesses a different number of protons, has a different weight, and different properties. Silver, gold, sulfur, carbon, oxygen, and helium are examples of elements. food chain: A sequence of organisms through which matter and energy (in the form of food) flow within a certain community. food producer: Photosynthetic organisms; those that are able to produce food (glucose) from carbon dioxide, water, and sunlight. (Continued on Blackline Master 3) 2001 Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution

20 3 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Vocabulary List and Activity (continued) Fungi: The kingdom of living things made up of organisms that include mushrooms, molds, and yeasts. In food chains, fungi often act as decomposers. gas: One of the three states of matter on earth. Gases are forms of matter that have no definite shape and can be turned into liquids under extreme pressure. glucose: The sugar, whose chemical formula is C 6 H 12 O 6, that is created by photosynthesis. heterotrophs (het-er-oh-trof): Organisms not able to make their own food. Decomposers as well as primary, secondary and tertiary food consumers are heterotrophs. homeostasis (home-ee-oh-stay-sis): The maintenance of a balanced internal environment. hydrogen: The simplest element of matter and the most abundant element in the universe. "H" is the symbol for hydrogen. Hydrogen gas (H 2 ) is a molecule made from two atoms of hydrogen chemically bonded together. liquid: A form of matter that flows and can be poured. Liquids take on the shapes of their containers. matter: One of the two basic ingrediants of the universe. Matter has mass (similar to weight) and occupies space. metabolism: The sum of all the chemical processes that take place in an organism. molecule: A chemical substance formed when the atoms of one or more elements are bonded together. neutron: Uncharged subatomic particles found in the nuclei of all atoms but hydrogen. organism: A living thing. photosynthesis: The biochemical process carried out by plants and certain other organisms that possess chlorophyll wherby sunlight is trapped, and carbon dioxide and water react to form energy-rich glucose and oxygen. primary consumer: In a food chain, primary consumers are organisms that survive on a diet of plants or other photosynthetic organisms. products: The things that are produced by chemical reactions. p r o t o n: A positively charged subatomic particle found in the nuclei of atoms. reactants: The things that are reacting with one another in a chemical reaction. secondary consumer: Organisms in food chains that eat primary consumers. solid: One of the three states of matter on earth. Solids have definite shape. species: A group of similar organisms that interbreed in nature. states of matter: Depending on the temperature and atmospheric pressure, matter can be either solid, liquid or gas. In stars, a fourth state of matter exists, called plasma. subatomic particles: The particles that make up atoms: protons, neutrons and electrons. Different elements of matter possess different properties due to the fact that each element possesses different numbers of subatomic particles. sugars: A certain class of energy- rich chemical compounds made from the elements carbon, hydrogen and oxygen. Chemically speaking, there are many different kinds of sugars. tertiary consumers (ter-she-airy): In food chains, these organisms eat the secondary consumers. thermonuclear reactions: Unlike chemical reactions which rearrange chemical bonds of molecules, thermonuclear reactions are reactions that take place in gases at a heat of several million degrees. Thermo-nuclear reactions occur in stars and during the ex-plosions of hydrogen bombs. They cause new elements to be formed and old elements to be destroyed. Nuclear reactions bring about new arrangements of subatomic particles and this is what causes the new elements to be formed. Vocabulary Activity Using the Vocabulary List, fill in the blanks with the correct word or words: 1. The smallest particle of the element iron is called an of iron. 2. When iron reacts with oxygen, the product of the reaction is iron oxide (rust), which is called a, because it contains two different elements. 3. The biochemical process known as produces energy-rich glucose and oxygen.) 4. One of carbon dioxide is made from one atom of carbon and two atoms of oxygen. 5. In food chains, the main decomposers are and Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution

21 4 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Crossword Puzzle ACROSS: 1. In a food chain, the consumers eat the food producers In cellular respiration, the sugar called is broken down in order to create energy-rich ATP Water, H 2 O, is an example of a chemical because it is made from both hydrogen and oxygen Silver and gold, like hydrogen and oxygen, are the pure types of matter known as The light trapping molecule found in plants is called. DOWN 1. In cellular respiration, dioxide, water, and ATP are produced. 2. In food chains, the, organisms such as bacteria and fungi, break down dead material into nutrients for plants. 3. are made from protons, neutrons, and electrons Sunlight ends up being turned into stored chemical energy by the important biological process called. 5. Solid, gas, and are the three states of matter on earth Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution

22 5 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Post-Test Directions: Answer the following questions as directed by your teacher. Use the back of this sheet if necessary. 1. Write out the basic equation for photosynthesis and a paragraph describing what happens during photosynthesis. 2. Write out the basic equation for cellular respiration and a paragraph describing what happens during cellular respiration. 3. Define the following words or terms: a. atomb. elementc. chemical reactionsd. moleculee. subatomic particles Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution

23 6 Name The Flow of Matter and Energy in the Living World: Photosynthesis and Cellular Respiration from the Biology: The Science of Life Series Video Quiz Directions: Answer the following questions either True or False. 1. TRUE OR FALSE? Elements are pure types of matter. 2. TRUE OR FALSE? Atoms are made from molecules. 3. TRUE OR FALSE? Chlorophyll is needed for cellular respiration. 4. TRUE OR FALSE? Matter and energy flow through food chains. 5. TRUE OR FALSE? Chemical compounds contain at least two types of atoms Ancient Lights Educational Media Published and Distributed by AGC/United Learning All rights to print materials cleared for classroom duplication and distribution