Which of the Following Is True of Neural Impulses in a Single

question 405

Multiple Choice

Which of the following is true of neural impulses in a single neuron?

• A) The neuron may fire during the absolute refractory period.
• B) The strength of a neural impulse increases as the strength of the incoming message gets stronger.
• C) The strength of a neural impulse decreases as the strength of the incoming message gets stronger.
• D) The strength of a neural impulse is the same each time the neuron fires.

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Definitions:

Transcription

The method by which RNA polymerase enzymes transcribe a portion of DNA into RNA.

Cryptochrome

A class of flavoproteins that are sensitive to blue light and are involved in the circadian rhythms and growth regulation of plants and animals.

Wavelength

The distance between successive peaks of a wave, typically used in the context of electromagnetic waves such as light.

Pfr

The far-red absorbing form of phytochrome, a plant photoreceptor involved in regulating plant growth and development in response to light conditions.