When you feel threatened, the neurotransmitter norepinephrine is released from the adrenal gland in response to

stimuli by ____ neurons.



a. somatic
b. sensory
c. sympathetic
d. motor
e. parasympathetic


ANSWER: c

Biology & Microbiology

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During the inventory of bacterial genes present in the Sargasso Sea in the middle of the Atlantic Ocean, a research team concluded that at least 1800 bacterial species were discovered

Based on what you know about this area, what would you expect to see in coral reef waters? A) slightly greater genetic diversity B) slightly smaller genetic diversity C) equal genetic diversity D) markedly greater genetic diversity E) markedly smaller genetic diversity

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Different clusters of related Galápagos finch species each occupy a somewhat different ____, a term that describes a

general way of life.

a. niche zone b. adaptive zone c. hybrid zone d. novel habitat e. disjunct habitat

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The type of RNA that carries out RNA interference is

A) tRNA. B) mRNA. C) rRNA. D) siRNA.

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During photosynthesis, high-energy carbohydrates are produced at the end of

A) light absorption by chlorophyll. B) cellular respiration. C) the light reactions. D) the Calvin cycle. E) the electron transport pathway.

Biology & Microbiology