The hormone(s)_______, released during a workout, most directly contributes to the feeling of contentment and well-being of the person exercising
a. cortisol
b. norepinephrine
c. endorphins
d. erthyropoietin
e. growth hormone
C; Endorphins are the "feel good" hormones, and are produced during exercise. Cortisol and norepinephrine are produced in response to stress, and in fact may increase during exercise, but they won't make you feel good. Erythropoietin may also be released in response to exercise, in order to promote the buildup of red blood cells, but it won't boost your mood, either. Growth hormone is unlikely to be much of a factor in this response.
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A. Hershey and Chase B. Chargaff C. Franklin D. Watson and Crick
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a. phosphorylation of serine residues. b. phosphorylation of mannose residues. c. binding of GTP. d. binding of ATP.
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A. II and III B. Just I C. Just II D. I and II E. I, II, and III