Carotenoids are important to many plants because these pigments are able to
A. capture UV radiation that is harmful to the DNA in the nucleus of plant cells.
B. absorb wavelengths of light that neither chlorophyll a nor b can absorb.
C. store electrons for use during the "dark" reaction of photosynthesis.
D. absorb water so that hydrolysis can be carried out in the chloroplasts.
E. remove carbon dioxide from the air.
Answer: B
You might also like to view...
A neomorphic mutation in the Antennapedia (Antp) gene of Drosophila causes
A) kinks to form in their tails. B) growth of antenna from the leg region. C) total loss of color vision. D) extra antenna on the head. E) growth of a leg from the head region.
The ____ of the eye is a tissue that is densely
packed with photoreceptors. In the above diagram of the eye, which letter identifies it?
a. lens; A b. vitreous body; C c. retina; C d. sclera; A e. cornea; D
Describe the route of water through a sponge.
A. enters through the spongocoel into the osculum and exits via pores. B. enters through the pores into the osculum and exits via the spongocoel. C. enters through the osculum into the mesohyl and exits via the spongocoel. D. enters through pores into the spongocoel and exits via the osculum. E. enters through the osculum into the spongocoel and exits via pores.
Which of the following are characteristics of the Calvin cycle?
A) Nitrogen is fixed into an organic form during the Calvin cycle. B) The Calvin cycle produces glucose as an end product. C) The Calvin cycle produces carbon dioxide and water. D) All these choices are correct E) The Calvin cycle requires light.