Using a plant for food would be an example of an ecosystem
a. good.
b. process.
c. service.
d. all of these
A
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Cyclic AMP is synthesized from ATP by an enzyme called ________ which is involved in ________
A) adenylate cyclase / catabolite repression B) adenylate cyclase / transcriptional activation C) cAMP receptor protein (CRP) synthase / catabolite repression D) cAMP receptor protein (CRP) synthase / transcriptional activation
What determines the rate of CO2 diffusion into a leaf?
A. the concentration gradient B. the rate at which photosynthesis is occurring C. both the concentration gradient and the rate at which photosynthesis is occurring D. the rate of respiration
Root systems that are adapted to absorb water and nutrients from the upper layers of soil are called a(n) ____
a. adventitious root systems b. prop root systems c. fibrous root systems d. taproot systems e. storage root systems
The process by which water is pulled up through the xylem columns of plants as it evaporates out of the leaves is called
A. respiration. B. stomatization. C. anhydration. D. osmosis. E. transpiration.