A Single Epinephrine Molecule Can Cause the Release of Thousands

question 48

Multiple Choice

A single epinephrine molecule can cause the release of thousands of glucose molecules from glycogen in a liver cell.Why is this a useful feature of this signal transduction pathway?

• A) Having multiple steps in a signal transduction pathway increases the complexity of the system.
• B) The body produces minimal amounts of epinephrine and circulates minimal amounts of this hormone in the blood.
• C) The liver cell synthesizes only the proteins needed for this signal transduction pathway and not others involved in pathways not active in the liver.
• D) The liver cell exhibits only on its surface receptors, such as the epinephrine receptor, that are needed for liver cell functions.
• E) More protein components present in a signal transduction pathway increase the chances for a problem to arise via a mutation event.

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Definitions:

Unconscious Mental Activity

Psychological processes that occur without an individual's conscious awareness, influencing thoughts, feelings, and behaviors.

Simultaneous Processing

The cognitive ability to process multiple pieces of information at the same time.

Parallel Tracks

Situations or processes that occur simultaneously or side-by-side with little to no intersection or effect on each other.

Sleep Apnea

A sleep disorder characterized by pauses in breathing or periods of shallow breathing during sleep.