The structure that is at the center of control for endocrine activity, particularly as it relates to homeostasis, is the:
A) brain stem.
B) cerebral cortex.
C) posterior pituitary gland.
D) hypothalamus.
E) thyroid gland.
Answer: D
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One characteristic of life and living systems is that they are able to adapt. In general, cells interact with other cells and their environment through the action of their _____
A) plasma membrane and extracellular matrix B) microtubular tracks C) hormones D) intracellular electrical currents
An example of homologous structures is the wing of a bat and the:a
arm of a human. b. wing of a beetle. c. tail of a whale. d. leg of a chimpanzee. e. dorsal fin of a shark
The liquid material that leaks through capillaries to surrounding cells is
A. plasma. B. mucus. C. tissue fluid. D. blood.
Photosynthesis occurs in two phases. What is another name for the dark reaction?
A) autotrophic B) Calvin cycle C) hydrolysis D) Krebs Cycle