If you eliminated all sources of calcium (dairy products, some vegetables) from your diet, the level of ____ would rise
in an attempt to supply calcium stored in your body to the tissues that need it.
a. aldosterone
b. calcitonin
c. mineralocorticoids
d. parathyroid hormone
e. GH
ANSWER: d
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The ratio of toxic dose to therapeutic dose is called the
A. therapeutic index. B. phenol coefficient. C. susceptibility quotient. D. toxicity index.
The last portion of the excretory system through which urine passes before it is eliminated from the body is the
a. glomerulus. b. ureter. c. urethra. d. bladder. e. rectum.
Why are there fewer tRNA anticodons than the 61 needed to match each mRNA codon that codes for an amino acid?
A. There is some flexibility in pairing between the 5' base of the codon and the 3' base of the anticodon. B. There is some flexibility in pairing between the middle base of the codon and the middle base of the anticodon. C. There is some flexibility in pairing between all 3 bases of the codon and all 3 bases of the anticodon. D. There is some flexibility in pairing between the 3' base of the codon and the 5' base of the anticodon.
A rise in sodium levels and extracellular volume leads to a rise in blood pressure. As a result, ____.
A. renin levels rise, but aldosterone levels fall B. renin levels fall, but angiotensin levels rise C. renin and aldosterone levels rise D. renin and aldosterone levels drop E. renin levels drop, but aldosterone levels remain the same