Carotenoids are important to many plants because these pigments are able to
A. store electrons for use during the "dark" reaction of photosynthesis.
B. absorb water so that hydrolysis can be carried out in the chloroplasts.
C. absorb wavelengths of light that neither chlorophyll a nor b can absorb.
D. capture UV radiation that is harmful to the DNA in the nucleus of plant cells.
E. remove carbon dioxide from the air.
Answer: C
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a. antigens b. antibodies c. MHC markers d. cytokines
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a. immunoglobulins. b. complement. c. antigens. d. histamines. e. cyclins.
Figure "A" in the accompanying figure is a ____
a. cotyledon b. cladode c. corm d. eudicot leaf e. monocot leaf
Where does the Calvin cycle occur?
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