TRH is a type of ________ hormone secreted by the ________

A) steroid; thyroid gland
B) releasing; hypothalamus
C) peptide; thymus
D) releasing; anterior pituitary


Answer: B

Biology & Microbiology

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The synthesis of ________, a component of Gram-negative bacterial outer membranes, is complex because it requires understanding both carbohydrate and lipid biosynthesis pathways.

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Archaea were first found ____

a. to be pathogenic b. living on the surface of leaves c. in surface ocean water d. in extreme environments e. in benign environments

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Each cell is able to maintain a constant internal

environment. This condition is called a. metabolism. b. homeostasis. c. physiology. d. adaptation. e. evolution

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The benefits of many pesticides are often short-lived, and their amounts must be increased for continued effectiveness because:

A) they react with their own breakdown products. B) they select for evolution of resistance in target organisms. C) they interact with other pesticides already in use. D) they interact with various fertilizers applied to the same fields.

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