Which of the following is characteristic of a steroid hormone action?

A) protein phosphorylation
B) cell-surface receptor binding
C) internal receptor binding
D) second messenger activation


Answer: C

Biology & Microbiology

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a. ectomycorrhiza b. lichen c. arbuscule d. endomycorrhiza e. haustorium

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Studies have shown that _____ interfere(s) with proper thyroid function

a. iodine b. nitrites c. phosphates d. calcium e. nitrates

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If a scientist is conducting a study of how a male bird's song and the female bird's response evolved, what type of causation is she exploring?

A. ethnological causation B. fixed action pattern causation C. proximate causation D. ultimate causation E. stereotyped causation

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