The ion that enters myofibrils and stimulates actin and myosin to shorten the cell (contract) is:

a. iron.
b. calcium.
c. sodium.
d. potassium.


B

Nutritional Science

You might also like to view...

The nutrient that produces ketones as a by-product of metabolism is:

a. carbohydrate. b. protein. c. fat. d. glucose.

Nutritional Science

Most of the sodium consumed is absorbed from the

A) stomach. B) mouth. C) large intestine. D) small intestine.

Nutritional Science

Which of the following psycho-social factors affects the nutritional well-being of older adults?

A) Depression B) Difficulty in preparing balanced meals C) Social isolation D) Loneliness E) All of the above

Nutritional Science

Approximately how many Germans immigrated to America between 1820 and 1900?

a. 1 million b. 3 million c. 5 million d. 7 million e. 9 million

Nutritional Science