Within a single motor neuron, what direction does an impulse follow?

a. dendrite ? axon ? cell body
b. axon ? dendrite ? cell body
c. dendrite ? cell body ? axon
d. cell body ? dendrite ? axon
e. cell body ? axon ? dendrite


ANSWER: c

Biology & Microbiology

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A mixture of vegetable oil and water will separate into layers because oil is ____ and forms ____

a. hydrophobic; nonpolar associations b. hydrophilic; nonpolar associations c. hydrophilic; polar associations d. hydrophobic; polar associations e. hydrophobic; ionic associations

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Why are tropical waters so blue?

a. Higher density of water b. Large bacteria populations c. High mineral content d. Low primary productivity

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When atmospheric CO2 concentrations decrease, the ________ cycle gives C4 plants an advantage over C3 in carbon fixation

Fill in the blank with correct word.

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Which of the following has increased as a direct result of stratospheric ozone depletion?

a. CO2 b. UVB c. CFCs d. nitrous oxides e. sulfur oxides

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