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Cells DQ 2014-2015 1. What is the role of the mitochondrion in cells? A. It converts sunlight to energy. C. It transports water throughout the cell. Name: ________________________________ 1 B. It controls all functions of the cell. D. It breaks down sugar to release energy. Justify---__________________________________________________________________________ __________________________________________________________________________________ 2. Liz is examining a plant cell under a microscope. She sees many small green organelles inside the cell. Her teacher explains that the process of photosynthesis takes place inside these organelles. What organelles are Liz looking at? A. Golgi apparatus B. chloroplasts C. mitochondria D. ribosomes Justify---__________________________________________________________________________ __________________________________________________________________________________ 3. Which characteristic distinguishes a plant cell from an animal cell? A. cell membrane B. vacuole C. nucleus D. cell wall Justify---__________________________________________________________________________ __________________________________________________________________________________ 4. What part of the cell has a similar function to a school security guard, whose job it is to control who enters and leaves the school? A. nucleus B. Golgi body C. mitochondrion D. cell membrane Justify---__________________________________________________________________________ __________________________________________________________________________________ 5. Which cell structure carries out a function for a cell that is similar to the function that bark carries out for a tree? A. cell wall B. nucleus C. chloroplast D. mitochondrion Justify---__________________________________________________________________________ __________________________________________________________________________________ 6. Which of these is a characteristic of body cells that require large amounts of energy? A They have a large number of mitochondria. B They have a supplementary Y chromosome. C They have a two-layer membrane. D They have a storage area for albumin proteins. Justify---__________________________________________________________________________ __________________________________________________________________________________ 7. Which of the following organelles use carbon dioxide to produce sugars? A vacuoles B ribosomes C chloroplasts D mitochondria Justify---__________________________________________________________________________ __________________________________________________________________________________ 8. Which molecule provides most of the energy used to drive chemical reactions in cells? A. DNA B. RNA C. ATP D. ADP Justify---__________________________________________________________________________ __________________________________________________________________________________ Cells DQ 2014-2015 Name: ________________________________ 2 9. Why are photosynthesis and cellular respiration often considered opposites? A. Photosynthesis produces twice as many ATP molecules as cellular respiration does. B Water is released during photosynthesis and consumed during cellular respiration. C Photosynthesis occurs during the day, and cellular respiration occurs at night. D Oxygen is produced during photosynthesis and used during cellular respiration. Justify---__________________________________________________________________________ __________________________________________________________________________________ 10. During photosynthesis in plants, what is the source of the carbon in the sugar molecule (C6H12O6)? A carbon dioxide in the air B carbon monoxide in the air C carbon particles in the soil D carbon particles in water Justify---__________________________________________________________________________ __________________________________________________________________________________ 11. Cell membranes perform all the following functions except — A making nutrients for cells B holding cytoplasm within cells C regulating substances exiting cells D recognizing other cells Justify---__________________________________________________________________________ __________________________________________________________________________________ 12. What is the main function of a vacuole? A. storage of water B. synthesis of energy C. replication of DNA D. formation of proteins Justify---__________________________________________________________________________ __________________________________________________________________________________ 13. Contrast red blood cells and white blood cells. 14. Which body cell and tissue would contain a larger number of mitochondria? Why? 15. Predict what would occur if mitochondria within a cell no longer functions or works.
