In humans and some primates, the most abundant neurons are the ____

a. efferent neurons
b. afferent neurons
c. interneurons
d. motor neurons


e. sensory neurons


ANSWER: c

Biology & Microbiology

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A carbohydrate consists of

(a) amino acid units. (b) one or more sugar units. (c) lipid droplets. (d) glycerol.

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The function of nectar is:

A. provision of carbohydrates for the plant B. attraction of pollinators C. preservation of delicate flower parts D. a sticky trap for parasitic insects E. none of the other choices provided

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Explain why proteins were initially hypothesized to be the genetic material instead of DNA. What will be an ideal response?

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There are ________ different olfactory receptor proteins in humans that allow us to sense a variety of odors

A) 5 to 10 B) 350 to 400 C) 10 to 15 D) 100,000 to 500,000 E) 1,000 to 1,500

Biology & Microbiology