Which term describes an action potential's inability to be triggered again immediately after firing; regardless of stimulus strength?
Difficulty: Hard
About this MCQ
Hard MCAT item. Correct choice: A. Absolute refractory period.
- A. Absolute refractory period ✓
- B. Resting potential
Why not B: “Resting potential” is not Absolute refractory period.
- C. Threshold potential
Why not C: “Threshold potential” is not Absolute refractory period.
- D. Hyperpolarization
Why not D: “Hyperpolarization” is not Absolute refractory period.
Correct answer
A. Absolute refractory period
Explanation
Absolute refractory period is the term that matches “Which term describes an action potential's inability to be triggered again immediately after firing; regardless of stimulus strength” (option A). Option B (Resting potential) is a different value from Absolute refractory period. Option C (Threshold potential) is a different value from Absolute refractory period. Option D (Hyperpolarization) is a different value from Absolute refractory period. Keep Absolute refractory period as the MCAT fact for this stem.
Source: Original practice question; MCQsHub
Tags: American Exams, MCAT, Physiology, Neuroscience
Submitted by: MCQsHub Editorial
Related MCQs
- According to the central dogma of molecular biology; what is the correct order of information flow?
- In classical conditioning; what term describes a stimulus that triggers a response without prior learning?
- Which law states that at constant temperature; the pressure and volume of a gas are inversely proportional?
- What is the molarity of a solution containing 2.5 moles of solute dissolved in 5 liters of solution?
- What is the molarity of a solution containing 2 moles of solute dissolved in 2.5 liters of solution?
- What is the molarity of a solution containing 1 moles of solute dissolved in 0.5 liters of solution?