Which of the following best describes the process of diffusion?
diffusion is the movement of molecules from an area of lower concentration to one of higher concentration by random molecular motion.

diffusion is the movement of molecules from an area of higher concentration to one of lower concentration caused by an input of energy to the system.

diffusion is the movement of molecules from an area of lower concentration to one of higher concentration caused by an input of energy to the system.

diffusion is the movement of molecules from an area of higher concentration to one of lower

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.