What Is Thought to Cause the Sodium Channels That Initiate

question 65

Multiple Choice

What is thought to cause the sodium channels that initiate an action potential to be inactivated for a brief time after being open for about 1 msec?

• A)a higher positive charge
• B)a higher negative charge
• C)the random diffusion of an inactivation peptide into the opening of the channel pore
• D)removal of a peptide from the channel protein
• E)covalent addition of a peptide to the cytoplasmic end of the channel protein

---

Definitions:

Population Experience

The collective experiences, events, and conditions that affect a specific population group over time.

Growth

The process by which living organisms increase in size, number of cells, and/or complexity, often through cell division and differentiation.

Years

Units of time equal to 365 days or 366 days in a leap year, used in the measurement of the duration of events or intervals between them.

Carrying Capacity

The maximum number of individuals of a species that an environment can support sustainably without degrading.