Gap Junctions and Plasmodesmata Differ in That

question 27

Multiple Choice

Gap junctions and plasmodesmata differ in that

• A) gap junctions are connected by protein tubules called connexons, whereas plasmodesmata are connected by extensions of the plant's cell walls.
• B) gap junctions allow much larger molecules to pass through them.
• C) gap junctions allow no real physical connection between cells; rather they are the spaces between cells.
• D) one is found in animals and the other is found in plants.
• E) gap junctions are connected by desmotubules, and plasmodesmata are connected by connexons.

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Definitions:

Overview

A summary or brief presentation of the main points or features of a subject or written work.

Place Theory

A theory in hearing that suggests different areas of the cochlea are activated by different frequencies of sound.

Frequency Theory

A theory in the study of hearing which suggests that the perception of pitch depends on the rate at which auditory nerve fibers are stimulated by the sound wave.

Pitch Perception

The aspect of hearing that allows the differentiation of sounds based on the frequency of their vibrations, discerning high sounds from low sounds.