Question

The frequency of a sound determines: Option 1: A) The loudness of a sound Option 2: B) The portion of the basilar membrane that vibrates Option 3: C) The direction of hair cell stereocilia vibration Option 4: D) The vibration of the tectorial membrane

Answer 1

The frequency of a sound determines the pitch, which is the perception of how high or low a sound is.

So, the correct answer is A.

Step-by-step explanation:

The frequency of a sound determines the pitch, which is the perception of how high or low a sound is. The basilar membrane in the inner ear vibrates differently according to the frequency of sound waves, and this vibration stimulates different hair cells that are sensitive to specific frequencies. High frequency sounds selectively vibrate the basilar membrane near the entrance port of the inner ear, while lower frequencies travel farther along the membrane.

So, the correct answer is A.