Which of the following correctly explains the role of enzymes in biochemical reactions? (2 points) enzymes bond with one or more reactants to increase the amount of energy needed for the reaction. enzymes provide energy in the form of high-energy chemical bonds to increase the overall energy of a reaction. enzymes provide energy in the form of atp to lower the activation energy needed for the reaction. enzymes bond with one or more reactants and lower the activation energy needed for the reaction.

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.

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

What kinds of molecules can pass through the cell membrane without any problem?