Which of the Following Situations Occurs in Electrically Excitable Cells

question 141

Multiple Choice

Which of the following situations occurs in electrically excitable cells?

• A) When Na⁺ ion channels open, K⁺ ion channels close.
• B) The sodium-potassium pump moves sodium into the cell.
• C) Depolarization causes voltage-gated sodium ion channels to open.
• D) Sodium ion channels are opened by high extracellular calcium levels.
• E) The opening and closing of ligand-gated channels cause depolarization.

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Definitions:

Food Deprivation

A condition resulting from lack of food intake, leading to physical and psychological effects and often used in experiments to motivate behaviors in animals.

Eyeblink Response

A reflex action where the eyelids close rapidly to protect the eyes, typically triggered by sudden stimuli.

Guthrie

Refers to Edwin Ray Guthrie, a psychologist known for his "one-trial learning" theory, proposing that learning occurs in a single association between stimulus and response.

Single Trial

A learning process that occurs or is influenced significantly by one instance or exposure, often used in the context of memory or conditioning studies.