The function of adenylyl cyclase is to:
A. cleave PIP2 into DAG and IP3.
B. stimulate the release of calcium from the endoplasmic reticulum.
C. catalyze the conversion of ATP to cAMP.
D. directly activate protein kinase A (PKA).
Answer: C
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Which of the following statements is true regarding the mark-and-recapture method?
A. It assumes that the size of the population of interest remains constant between the initial mark and subsequent recapture measurements. B. It can be represented by the equatiAon: N = C/R x M. C. It can rely on members of a species being identified by physical characteristics (i.e., fin markings on whales). D. It is used to estimate the size of a population of interest. E. All of the answer options are correct. F. None of the answer options is correct.
When the population growth of the prey = 0, is the predator population increasing or decreasing?
a. It is always decreasing. b. It is always increasing. c. At the left point it is increasing and at the right point it is decreasing. d. At the right point it is decreasing and at the left point it is increasing.
In what type of tissue are glands found?
a. epithelial b. connective c. nervous d. muscle e. more than one of these
As plant cells rely on energy obtained directly from the sun to carry out any cellular processes, sugars are only used as backup energy sources for plants on cloudy days.
a. true b. false