How Do Citrus Fruits Such as Lemons Cause the Basic

question 22

Multiple Choice

How do citrus fruits such as lemons cause the basic taste of sour?

• A) The vitamin C of citrus fruits binds to specialized receptors on the plasma membrane of taste cells that trigger a sour taste response.
• B) Sugars and vitamin C molecules bind simultaneously to receptors on the taste cells, creating a mix of bitter and sweet that results in the sour taste.
• C) Citrus fruits release protons from citric acid) that flow directly into taste cells through H⁺ channels in the plasma membrane.
• D) Citric acid amplifies the sour taste of vitamin C when it binds to specialized receptors on the taste cells.

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Definitions:

Prepuce

The fold of skin that covers the glans of the penis in males or surrounds the clitoral glans in females, also known as foreskin in males.

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A female reproductive organ in which oocytes (eggs) are produced, and hormones like estrogen and progesterone are secreted.

Prostate Gland

The prostate gland is a male reproductive organ that produces seminal fluid, which nourishes and transports sperm.

Uterine Horn

The uterine horn is a region where the uterus and the fallopian tubes meet; in some species, it significantly contributes to the site of fetal development.