Science: jerri is planning to rebuild the engine of an antique car. she has chosen all the materials she needs, including a high-quality synthetic oil to reduce friction in the engine. what effect will reducing the friction have on the engine's performance? select all that apply
a. reduced friction means reduced efficiency
b. reduced friction means reduced heat transfer*
c. reduced friction means increased efficiency*
d. reduced friction means increased heat transfer
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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.