In an Action Potential, the Inflow of Positively Charged Ions

question 57

Multiple Choice

In an action potential, the inflow of positively charged ions drives the membrane potential in a positive direction, and if it surpasses a threshold around _____ mV, it increases rapidly until it reaches a peak at about +30 mV.

• A) -15
• B) -25
• C) -35
• D) -45

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Definitions:

Phenylketonuria (PKU)

A genetic disorder that increases the levels of a substance called phenylalanine in the blood, leading to intellectual disability and other health issues if untreated.

Gene-Environment Interactions

The complex interplay between an individual's genetic makeup and their environmental exposures, influencing various outcomes.

Phenylketonuria (PKU)

A genetic disorder characterized by a defect in the enzyme responsible for breaking down phenylalanine, leading to harmful levels of phenylalanine in the body if not treated.

Certain Enzyme

"Certain Enzyme" is a nonspecific term referring to a specific enzyme out of the many thousands that catalyze biochemical reactions in living organisms.