B Anandan 1 HmWK 5 Key Version #2 1. In what portion of the plant does photosynthesis takes place? A. mesophyll B. chloroplast C. thylakoid membrane D. grana E. All of the choices are correct. 2. Which of the following is most TRUE about multicellular organisms when compared with unicellular organisms? A. Multicellular organisms carry out specialized functions, while unicellular organisms do not. B. Multicellular organisms can reproduce themselves, while unicellular organisms cannot. C. Multicellular organisms can digest more complex molecules than unicellular organisms. D. Multicellular organisms tend to have larger genomes than unicellular organisms. E. Multicellular organisms show development while unicellular organisms do not. 3. Which of the following has the highest photosynthetic efficiency in hot and dry environments? A. C3 plants B. C4 plants C. plants undergoing photorespiration D. plants that use oxygen to produce sugars E. plants that only produce sugar in the dark 4. Programmed cell death is known as ____. A. meiosis B. cell genesis C. autophagy D. apoptosis E. mitosis 5. Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for the buildup of which molecule? A. ATP B. lactate
B Anandan 2 C. carbon dioxide D. ADP E. oxygen 6. Which of the following is NOT a function of the extracellular matrix? A. provides strength B. provides structural support C. provides organization of cells throughout the organism D. provides an important source of energy for the organism E. cell signaling 7. What type of signaling occurs when insulin is secreted from the pancreas and acts on muscle cells to increase glucose uptake? A. contact-to-contact signaling B. intercellular signaling C. autocrine signaling D. paracrine signaling E. endocrine signaling 8. During exposure to elevated glucose, a yeast cell's membrane glucose transporters will rapidly increase so the cell can import glucose. Which would represent the signal for the yeast cell? A. glucose transporters B. glucose receptors C. glucose D. glucose transport into the cell E. glucose kinase 9. This pigment is responsible for the red-yellow coloration seen in leaves during the color change in autumn. A. chlorophyll a B. chlorophyll b C. carotenoids D. porphyrin E. phytol 10. This forms a seal that prevents the movement of substances between cells, for instance from the intestinal lumen into the blood. A. gap junctions B. tight junctions C. desmosomes D. hemidesmosomes E. focal adhesions
B Anandan 3 11. Vanillin is to flavonoids as atropine is to A. flavonoids. B. terpenoids. C. polyketides. D.
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