true or false? The three base sequence on the transfer RNA is the codon.
a. true
b. false
b. false
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Bile salts are
A. amphipathic. B. completely hydrophilic. C. completely hydrophobic.
Blood Ca2+ deficiency stimulates ________ secretion, which leads to ________.
A. growth hormone; increased osteoblast activity B. calcitriol; more urinary phosphate excretion C. thyroid hormone; less urinary calcium excretion D. calcitonin; more urinary phosphate reabsorption E. parathyroid hormone; increased osteoclast activity
The thoracic cavity and abdominopelvic cavity are each lined with ________
A) the pericardium B) the meninges C) a serous membrane D) a mucous membrane E) an endothelium
The parts of an amino acid that are important in the protein buffer system are the
A. amino and R groups. B. monocarbonate and bicarbonate groups. C. amino and carboxyl groups. D. monohydrogen phosphate and dihydrogen phosphate groups.