Which of the Following Structures Can Be Visualized with the Light

question 87

Multiple Choice

Which of the following structures can be visualized with the light microscope?

• A) nucleus
• B) synaptic vesicles
• C) neurotransmitter receptors
• D) microtubules
• E) microfilaments

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Definitions:

Dopamine

A neurotransmitter involved in many functions, including movement, motivation, reward, and regulation of mood.

Tropomyosin

A protein that wraps around actin filaments in skeletal and cardiac muscle cells, playing a key role in regulating muscle contraction.

Actin

A protein that forms (along with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cells.

Muscle Contraction

The process by which muscle fibers generate force and shorten or maintain tension in response to stimulation.