Classification.The processes listed below represent major chemical pathways in photosynthesis. Respond to the following statements with reference to these five processes.
A. This yields NADPH as well as ATP.
B. This is a carbon-fixing system that separates two carbon fixations into night and day activities.
C. In this process, carbon dioxide is incorporated first into an unstable intermediate compound and then into phosphoglycerate.
D. PGAL molecules are formed from the reaction of PGA molecules with ATP and NADPH in this pathway.
E. This carbon-fixing system uses CO2from inside the plant, and precedes the Calvin-Benson cycle.
A. Light-dependent reactions
B. CAM pathway
C. Carbon fixation
D. Calvin-Benson cycle
E. C4 pathway
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__________ increase the free surface area of
epithelia that absorb substances. Fill in the blank(s) with the appropriate word(s).
In ________, proteins on the surface of the sperm are not able to bind to proteins on the surface of the egg.
A. gametic isolation B. mechanical isolation C. temporal isolation D. behavioral isolation
What is the best description of double fertilization in angiosperms?
A. One pollen grain fertilizes the embryo sac; the other sperm fertilizes the pollen grain. B. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the polar nuclei, which forms the seed coat. C. One sperm fertilizes the egg, which develops into the embryo; the other sperm produces the pollen tube. D. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the ovary, which becomes the fruit. E. One sperm fertilizes the egg, which develops into the embryo; the other sperm fertilizes the polar nuclei, which forms the endosperm.
Recall that your text states the following energy analogies:
a. ATP is compared to a few coins in your pocket. b. Creatine phosphate is compared to a handful of dollars. c. The glycolytic system is like an account in the bank. d. The oxidative energy system is compared to stocks and bonds.In your own words explain why each is a valid comparison.