Some types of vitamin A are immediately usable by the body, while other types need to be converted first. Read the statements below and select the correct statements regarding retinol. a. Retinol is the most usable form of preformed vitamin A.
b. All carotenoids from plant foods are easily converted to vitamin A.
c. Preformed vitamin A is only found in animal food sources, foods that are fortified, or supplements.
d. Retinol needs to be converted to retinal before it can be utilized by the body.

Which enzymes break down carbohydrates?

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.