If Your Heart Is Beating at 76

question 87

Multiple Choice

If your heart is beating at 76.0 beats per minute, what is the frequency of your heart's oscillations?

• A) 4560 Hz
• B) 1450 Hz
• C) 3.98 Hz
• D) 2.54 Hz
• E) 1.27 Hz

---

Definitions:

Chemiosmosis

Chemiosmosis is the movement of ions across a selectively permeable membrane, down their electrochemical gradient, fundamental in processes like ATP synthesis in cells.

Proton Gradient

A gradient formed by the difference in proton concentrations across a membrane, often used to generate ATP in cellular respiration and photosynthesis.

Mitochondrial Membrane

The membrane that encloses the mitochondrion, consisting of an outer membrane and an inner membrane with folds known as cristae, where energy production occurs.

Citric Acid Cycle

A key component of cellular respiration, this cycle processes acetyl-CoA to produce energy, NADH, FADH2, and carbon dioxide.