Cell and Membrane Practice. A. chromosome B. gene C. mitochondrion D. vacuole

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1 Name: ate: 1. Which structure is outside the nucleus of a cell and contains N?. chromosome. gene. mitochondrion. vacuole 2. potato core was placed in a beaker of water as shown in the figure below. Which diagram best represents the net movement of molecules? Which statement about plant and animal cells is true?. Plant cells have a nucleus and a cell wall; animal cells do not have either of these structures.. Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures.. Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but not a cell membrane.. Plant cells have chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria. page 1

2 4. Under what conditions will a substance be likely to enter a cell through diffusion?. when the substance is a particle of food. when a molecule of the substance is very large. when the concentration of the substance is greater outside the cell than inside. when the concentration of the substance is greater inside the cell than outside 5. light is a plant disease caused by a fungus that affects potato plants. Some wild breeds of potato have natural resistance to the fungus. These wild potatoes contain chemical compounds that cause them to taste bad. Scientists are trying to produce potato plants that are resistant to blight but still produce potatoes that taste good. Which of the following describes an important difference between a potato plant cell and a human cell?. Plant cells have a cell wall, and animal cells do not.. nimal cells store water inside, and plant cells do not.. Plant cells have a cell nucleus, and animal cells do not.. nimal cells perform respiration, and plant cells do not. 6. Which structure is responsible for allowing materials into and out of an animal cell?. Nucleus. ell wall. Mitochondrion. ell membrane 7. epending on its electric charge, shape, and chemical properties, a substance may or may not be allowed to pass through a cell membrane. This function of the cell membrane is important because it.. prevents cell division. prevents destruction of the cell wall. allows the cell to maintain homeostasis. allows amino acids to move into and out of the cell 8. Which cellular organelle uses oxygen and glucose to provide energy to the cell?. mitochondrion. nucleus. ribosome. vacuole page 2

3 9. The diagram below shows a cell. Where would this cell most likely be found?. bark. frog. leaf. mushroom 10. What are the basic structural units of living organisms?. cells. nuclei. organs. tissues 11. Which of the following best describes the purpose of the chromosomes in the nucleus of a cell?. to store the genetic instructions needed to specify traits. to release energy by breaking down food molecules. to transport nutrients into and out of the cell. to protect the cell from microorganisms 12. Which of the following structures is not present in animal cells?. cell membrane. cell wall. mitochondrion. nucleus 13. How is a skin cell from a mouse similar to an amoeba?. oth need energy.. oth have cell walls.. oth move with pseudopodia.. oth consume carbon dioxide. page 3

4 14. Substances enter any plant or animal cell by passing through which of the following structures?. nucleus. cell membrane. vacuole. chloroplast 15. student prepared the following list of characteristics about a cellular organelle. present in animal cells present in plant cells helps make energy available to the cell Which of the following cellular structures is the student describing?. cell wall. chloroplast. mitochondrion. nucleus 16. biology student observed the cells shown below under a microscope. These cells most likely came from. an animal.. an archaebacterium.. a fungus.. a plant. 17. Some cells, such as human nerve and muscle cells, contain many more mitochondria than do other cells, such as skin cells. Why do some cells have more mitochondria than others?. The cells use more energy.. The cells store more nutrients.. The cells degrade more proteins.. The cells divide more frequently. page 4

5 18. Which of the following is more likely to occur in a plant cell than in an animal cell?. synthesis of enzymes. formation of cellulose. breakdown of glucose. active transport of ions 19. single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference?. Eukaryotic cells are smaller than prokaryotic cells.. Eukaryotic cells have less N than prokaryotic cells.. Eukaryotic cells have more cell walls than prokaryotic cells.. Eukaryotic cells are more structurally complex than prokaryotic cells. 20. The diagram below illustrates how plant root cells take in mineral ions from the surrounding soil. Which of the following processes is illustrated?. active transport. diffusion. osmosis. passive filtration page 5

6 21. Which of the diagrams below best represents the net movement of molecules in osmosis? cross section of part of a Golgi complex is shown below. Part of the membrane of the Golgi complex pinches off and moves away. Which of the following is a function of this process?. to release energy from TP. to deliver proteins to other locations in the cell. to collect amino acids for use in protein synthesis. to send messages about cell requirements to the nucleus page 6

7 23. Which of the following functions does active transport perform in a cell?. packaging proteins for export from the cell. distributing enzymes throughout the cytoplasm. moving substances against a concentration gradient. equalizing the concentration of water inside and outside the cell 24. Which of the following is a main function of the cell wall?. to store carbohydrates for later use. to give the cell a rigid structure. to package proteins for export. to carry out photosynthesis 25. Which of the following statements correctly matches a cell part with its function?. The cell membrane packages lipids for export.. The mitochondria perform photosynthesis.. The lysosome digests molecules.. The nucleus produces energy 26. The illustrations below represent two different cells. Which of the following statements best identifies these two cells?. ell X is a prokaryotic cell and cell Y is a eukaryotic cell.. ell X is an archae cell and cell Y is a eubacterial cell.. ell X is a red blood cell and cell Y is a muscle cell.. ell X is a plant cell and cell Y is an animal cell. page 7

8 27. The table below lists the concentrations of water inside and outside a cell under four different conditions. ondition Water oncentration in ell Water oncentration in Environment 1 90% 95% 2 90% 100% 3 95% 90% 4 95% 95% Under which condition will the cell experience a net loss of water to its environment?. ondition 1. ondition 2. ondition 3. ondition biologist looks at an organism through a microscope. Which of the following observations tells the biologist that the organism is eukaryotic?. The organism is unicellular.. The organism moves with flagella.. The organism has a cell membrane.. The organism has membrane- bound organelles. 29. diagram of a plant cell is shown below. Which number identifies the organelle that functions to store water and dissolved salts? page 8

9 30. The following cell structures are located within cells that make proteins. Which description best explains the relationship among these cell structures in making a protein? nucleus ribosome endoplasmic reticulum (ER). nucleus makes protein protein winds through the ER protein folds into its active shape. nucleus directs ER to assemble the protein ribosomes surround protein protein folds into its active shape. ER creates protein N in the nucleus codes for ribosomes to surround protein protein folds into its active shape. N in nucleus codes for protein protein assembled in ribosomes and moves to ER protein folds into its active shape 31. What will happen if an animal cell that has a solute concentration of 1% is placed in a 5% saltwater solution?. It will shrink because there is less water outside of the cell than there is on the inside.. It will burst because there is more water on the outside of the cell than there is on the inside.. It will burst because there is more water on the inside of the cell than there is on the outside.. It will remain the same size because there is an equal amount of water on the inside and outside of the cell. 32. The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. ecause other substances are blocked from entering, this membrane is called. perforated.. semi-permeable.. non-conductive.. permeable. 33. The plasma membrane of a cell consists of. protein molecules arranged in two layers with polar areas forming the outside of the membrane.. two layers of lipids organized with the nonpolar tails forming the interior of the membrane.. lipid molecules positioned between two carbohydrate layers.. protein molecules with polar and nonpolar tails. page 9

10 34. Which of these is the site where proteins are made in all cells?. the nuclei. the ribosomes. the chloroplasts. the mitochondria 35. Use the information and the diagram below to answer the following question(s). Starch turns blue-black in the presence of iodine solution. selectively permeable dialysis sac containing a starch solution is placed into a beaker of iodine solution. If the dialysis sac is permeable only to water and iodine, what will the solutions in the beaker and the sac look like after two hours?. The iodine solution in the beaker will turn blue-black; the starch solution will not change.. The starch solution in the dialysis sac will turn blue-black; the iodine solution will not change.. Neither solution will turn blue-black.. oth solutions will turn blue-black. 36. Which of these processes is demonstrated by the experiment shown in the diagram?. cellular respiration. active transport. endocytosis. diffusion page 10

11 37. The diagram below shows an animal cell in a beaker containing a solution of sugar and water. The cell membrane is permeable only to water. NIML ELL IN SUGR N WTER SOLUTION Which statement describes the relationship between the animal cell and the contents of the beaker?. There is a higher concentration of water inside the cell than outside the cell.. There is a higher concentration of sugar inside the cell than outside the cell.. There is an equal concentration of water inside the cell as outside the cell.. There is an equal concentration of sugar inside the cell as outside the cell. 38. cellular process is shown in three steps in the diagram below. Which process is illustrated?. diffusion of water into a cell. production of protein from amino acids. active transport of molecules across a membrane. asexual reproduction by cell division page 11

12 39. The process of diffusion occurs when. all molecular movement stops.. molecules move from areas of lesser concentration to areas of greater concentration.. sugar molecules move into a cell.. molecules move from areas of greater concentration to areas of lesser concentration. 40. Initial onditions Inside ialysis Tubing starch glucose solution is colorless Inside eaker iodine water Final onditions Inside ialysis Tubing starch glucose iodine solution is blue/black solution is brown Inside eaker iodine water solution is brown Students use a pouch of dialysis tubing to model a cell membrane. starch and glucose solution is placed inside the pouch, and the pouch is placed into a beaker that contains iodine and water. n advantage of using the dialysis tubing to represent a cell membrane is that it is. permeable to all substances.. impermeable to all substances.. permeable to iodine and impermeable to starch.. impermeable to iodine and permeable to starch. page 12

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