Fungal cell walls typically consist of
a. cellulose.
b. chitin.
c. lignin.
d. peptidoglycan.
Answer: B
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ACTH stands for adrenocorticotropic hormone, but it is produced in the anterior pituitary. What is the basis of this name?
A. It is expressed most highly in tropical climates. B. It stimulates the adrenal cortex. C. It signals to the kidneys to reabsorb water. D. It stimulates appetite by acting on the cerebral cortex.
What is it called when members of the same species vie for the same resources?
a. interspecific competition b. predation c. intraspecific competition d. commensalism
The buildup of genetic differences between isolated populations is
a. gene flow. b. genetic equilibrium. c. divergence. d. adaptation. e. natural selection.
In an organism with 52 chromosomes, how many bivalents would be expected to form during meiosis?
A) 208 B) 13 C) 26 D) 52 E) 104