Which One of the Following Molecules Is Able to Move

question 4

Multiple Choice

Which one of the following molecules is able to move across the cell membrane by simple diffusion?

• A) DNA
• B) hemoglobin
• C) carbon dioxide
• D) glucose
• E) starch

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Definitions:

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another, playing a key role in the functioning of the nervous system.

Autonomic Nervous System

The part of the nervous system that controls involuntary actions of the body, such as heart rate and digestion.

Moderate Alcohol

Consumption of alcoholic beverages in a manner that is considered to be within the limits of safety, not leading to alcohol abuse or dependence.

Heart Attack

A medical condition that occurs when the blood supply to part of the heart is blocked, causing heart cells to die.