Which of the Following Is Most Likely True of a Protein

question 20

Multiple Choice

Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal?

• A) The sodium ions are moving down their electrochemical gradient while glucose is moving up.
• B) Glucose entering the cell along its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient.
• C) Sodium ions can move down their electrochemical gradient through the cotransporter whether or not glucose is present outside the cell.
• D) The cotransporter can also transport potassium ions.
• E) A substance that blocks sodium ions from binding to the cotransport protein will also block the transport of glucose.

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Definitions:

Seminal Vesicles

Glands in the male reproductive system that produce a significant portion of the fluid that becomes semen.

Vas Deferens

The duct that conveys sperm from the testicle to the urethra, playing a key role in the male reproductive system.

Human Chorionic Gonadotropin

A hormone produced during pregnancy by the developing embryo and the placenta to support fetal growth.

Corpus Luteum

A temporary endocrine structure in female ovaries that is involved in the production of progesterone, essential for maintaining pregnancy.