Cell Unit Practice Test #1

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1 ell Unit Practice Test #1 Name: ate: 1. Which organelle is primarily concerned with the conversion of potential energy of organic compounds into suitable form for immediate use by the cell?. mitochondria. centrosomes. ribosomes. vacuoules 3. student filled a bag of dialysis tubing with a milky-white starch solution and placed the bag in a beaker of iodine-water as shown in the diagram. n hour later, the student observed that the starch solution had turned blue-black (positive test for starch). What is the most probable explanation for the change?. The iodine diffused into the bag.. The starch was changed to sugar.. The iodine was changed to starch.. The starch diffused out of the bag. 2. Which structures function mainly in transport? 4. In which organelle would water and dissolved materials be stored? and F. and. and F. and page 1

2 5. Most of the enzymes involved in aerobic cellular respiration are located in the organelle labeled Select the cell compound, chosen from the list below, which is best described by the following phrase. Provides energy for biochemical reactions. N. Messenger RN. Transfer RN. TP 6. Which structure, composed mainly of proteins and lipids, aids in maintaining homeostasis in a cell?. chromosome. centrosome. cell membrane. nucleolus 10. The ribosomes is an organelle that functions in the process of. phagocytosis. pinocytosis. protein synthesis. cellular respiration 7. Which process requires the expenditure of cellular energy?. passive transport. active transport. osmosis. diffusion 11. The picture shown illustrates a process by which protein molecules may enter a cell. Structure is most likely a 8. Which molecules must be present in order for energy production to occur in the mitochondria of an animal cell?. chlorophyll molecules. carbon dioxide molecules. lactic acid molecules. ribosome. mitochondrion. nucleolus. vacuole. oxygen molecules page 2 ell Unit Practice Test #1

3 12. Which organelle is present in the cells of a mouse but not present in the cells of a bean plant?. cell wall. chloroplast. cell membrane. centriole 16. biologist diluted a blood sample with distilled water. While observing the sample under a microscope, she noted that the red blood cells burst. This bursting is most likely the result of which process?. staining. ingestion. osmosis. active transport 13. In which organelles are enzymes for intracellular digestion stored?. centrioles. lysosomes. nucleoli. chloroplasts 17. The organelle that is the site of cellular respiration is the. chloroplast. nucleus. mitochondrion. ribosome 14. The process of osmosis is best illustrated by the movement of. water into root hair cells. oxygen into red blood cells. carbon dioxide through stomates. glucose through phloem 18. Which organelle is the site of aerobic respiration in a maple tree?. chloroplast. mitochondrion. vacuole. ribosome 15. Which process requires cellular energy to move molecules across the cell membrane from a region of lower concentration to a region of higher concentration?. active transport. diffusion. osmosis. hydrolysis 19. Most cell membranes are composed principally of. N and TP. proteins and lipids. chitin and starch. nucleotides and amino acids page 3 ell Unit Practice Test #1

4 20. Which organelle aids in the maintenance of cell homeostasis by selectively regulating the passage of materials into and out of the cell? 24. Which process is most likely involved in the change in red blood cell volume in this experiment?. plasma membrane. ribosome. lysosome. nuclear membrane. phagocytosis. cyclosis. osmosis. hydrolysis 21. n organelle found in most plant cells, but absent from animal cells, is the. contractile vacuole. centriole. chloroplast. Golgi complex 25. Which cell activity is illustrated by the diagrams shown? 22. student prepared three different red blood cell suspensions as follows:. osmosis. diffusion. egestion. ingestion Suspension ontents red blood cells + normal blood serum red blood cells + 10% salt solution red blood cells + distilled water Which suspension, when viewed under the microscope, would contain red blood cells that appear wrinkled and reduced in volume? Red blood cells contain a higher concentration of potassium than the surrounding blood plasma does. This higher concentration is maintained by the process of. cyclosis. osmosis 23. Which suspension represents the control in this investigation?. simple diffusion. active transport... page 4 ell Unit Practice Test #1

5 27. Which cell organelle is composed of a series of channels throughout the cytoplasm that functions in the transport of molecules?. lysosome. chloroplast 30. In both cells, the organelles labeled E are the sites of. secretion. starch synthesis. aerobic respiration. food storage. cell wall. endoplasmic reticulum 31. Which structures are found in every living cell? 28. Which substances may pass through a cell membrane by simple diffusion?. starch and protein. protein and fat. a plasma membrane and cytoplasm. chloroplasts and mitochondria. a cell wall and nucleus. centrioles and chromosomes. carbon dioxide and water. carbon dioxide and starch 32. Which cellular organelle is represented by the diagram? 29. ell II most likely represents a plant cell due to the presence of. ribosome. centriole... E. F. plasma membrane. cell wall page 5 ell Unit Practice Test #1

6 33. In the diagram of a cell shown, the structure labeled X enables the cell to 36. The early study of cells by Schleiden and Schwann contributed to the formation of the cell theory. What is the most probable reason that these early biologists never viewed the cell organelles known as ribosomes?. release energy. store waste products. control nuclear division. manufacture proteins. Ribosomes cannot be observed unless the cell is stained with iodine.. Ribosomes are too small to be seen with early microscopes.. Primitive cells did not need to synthesize proteins.. The presence of ribosomes can only be detected using a centrifuge. 34. Shown is a green plant cell. The chemical reactions involved in the synthesis of TP occur in structure In plant and animal cells, most enzymes involved in aerobic cellular respiration are located. throughout the cytoplasm. within the ribosomes. on the endoplasmic reticulum. within the mitochondria 38. Which cytoplasmic organelles contain hereditary material and can undergo replication? 35. Shown is a green plant cell. Which structure is chiefly composed of a nonliving material known as cellulose?..... chloroplasts and cell walls. cell membranes and ribosomes. endoplasmic reticula and food vacuoles. mitochondria and chloroplasts page 6 ell Unit Practice Test #1

7 39. ase your answer(s) to the following question(s) on the equations shown below and on your knowledge of biology. Equations 40. Which statement is not a part of the cell theory?. ells are the basic unit of structure of living things.. ells are the basic unit of function of living things. In animals, the reaction in equation occurs in the. lysosomes. chloroplasts. ell parts such as chloroplasts are selfreplicating.. ells come from preexisting cells.. mitochondria. ribosomes 41. Which cell organelle is most directly involved with the bonding of amino acids?. mitochondrion. endoplasmic reticulum. cell wall. ribosome page 7 ell Unit Practice Test #1

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