Chapter_4_National_Exam_helper

Chapter_4_National_Exam_helper - Chapter 4 National Exam...

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Chapter 4 National Exam helper. Multiple Choice 3. Cholesterol is synthesized by a. chloroplasts. b. lysosomes. c. the SER. d. the Golgi. e. mitochondria. Answer: c 7. The DNA of mitochondria a. is needed to hydrolyze monomers. b. is used to make proteins needed for cellular respiration. c. directs photosynthesis. d. controls the cell’s activities. e. synthesizes polysaccharides for the plant cell wall. Answer: b 10. The cell is the basic unit of function and reproduction because a. subcellular components cannot regenerate whole cells. b. cells are totipotent. c. single cells sometimes can produce an entire organism. d. cells can come only from preexisting cells. e. a cell can arise by the fusion of two cells. Answer: a 11. What is the major distinction between prokaryotic and eukaryotic cells? a. A prokaryotic cell does not have a nucleus, whereas a eukaryotic cell does. b. A prokaryotic cell does not have DNA, whereas a eukaryotic cell does. c. Prokaryotic cells are smaller than eukaryotic cells. d. Prokaryotic cells have not prospered, whereas eukaryotic cells are evolutionary “successes.” e. Prokaryotic cells cannot obtain energy from their environment. Answer: a 12. Which of the following is not a characteristic of a prokaryotic cell? a. A plasma membrane b. A nuclear envelope c. A nucleoid d. Ribosomes e. Enzymes Answer: b 15. Which of the following is (are) found in prokaryotic cells?
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a. Mitochondria b. Chloroplasts c. Nuclear membrane d. Ribosomes e. Endoplasmic reticulum Answer: d 18. Which structure supports the plant cell and determines its shape? a. Capsule b. Flagellum c. Cell wall d. Cytosol e. Cytoplasm Answer: c 19. Some bacteria are able to propel themselves through liquid by means of a structure called the a. flagellum. b. pilus. c. cytoplasm. d. cell wall. e. peptidoglycan molecule. Answer: a 21. Ribosomes are not visible under a light microscope, but they can be seen with an electron microscope because a. electron beams have more energy than light beams. b. electron microscopes focus light with magnets. c. electron microscopes have more resolving power than light microscopes. d. electrons have such high energy that they pass through biological samples. e. living cells can be observed under the electron microscope. Answer: c 22. Using a light microscope, it is possible to view cytoplasm streaming around the central vacuole in cells of the green alga Nitella . Why would you use a light microscope instead of an electron microscope to study this process? a. Electron microscopes have less resolving power than light microscopes.
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This note was uploaded on 09/22/2009 for the course BIO 10087 taught by Professor Mossman during the Spring '09 term at ASU.

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Chapter_4_National_Exam_helper - Chapter 4 National Exam...

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