Graded potentials are particularly important for conveying stimulus intensity in
A. Schwann cells.
B. motor neurons.
C. sensory neurons.
D. interneurons.
E. skeletal muscle cells.
Answer: C
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What factor is believed to be a contributing factor to the decline of insect populations? a. Development of natural areas
b. Use of pesticides. c. Spread of newly introduced diseases. d. All of these choices. e. Insect populations are not declining.
Diffusion doesn't require energy. Why do plants expend energy to actively transport minerals into root hairs?
A) Minerals are too large for diffusion. B) Mineral concentrations in the soil are too high for diffusion. C) Mineral concentrations in the soil are too low for diffusion. D) Minerals are strongly attracted to soil particles.
What is the advantage of a rapid identification tool such as the API system?
A) can often be read using an automated reader B) can be inoculated with a mixed or unpurified culture C) allows a high volume of samples to be processed quickly and reliably and can be inoculated with a mixed or unpurified culture D) allows a high volume of samples to be processed quickly and reliably E) allows a high volume of samples to be processed quickly and reliably and can often be read using an automated reader
Which of the following substances is commonly used to inactivate microbes?
A. formaldehyde B. alcohol C. synthetic detergents D. fluorescent dyes E. alum