Animals are not able to convert fatty acids into carbohydrates. the net synthesis of one mole of oxaloacetate from two moles of acetyl‑coa by the citric acid cycle does not occur because one mole of oxaloacetate is used in the cycle for each one generated. plants are able to convert two moles of acetyl‑coa into one mole of oxaloacetate with only two additional enzymes not found in animals. this process is called the glyoxylate cycle, and it occurs in organelles called glyoxysomes. classify the enzymes based on whether they are found only in plants or are found in both plants and animals.

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.