Which type of hormone releases cyclic AMP as a second messenger?
a. peptide only
b. steroid only
c. protein only
d. peptide and protein only
e. peptide, steroid, and protein
ANSWER: d
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The use of birth control pills (oral contraceptives) _____
A) reduces the incidence of ovulation B) prevents fertilization by keeping the sperm and egg physically separated by a mechanical barrier C) prevents implantation of an embryo D) prevents sperm from exiting the male urethra E) prevents oocytes from entering the uterus
Drosophila melanogaster has four pairs of chromosomes (including a pair of sex chromosomes). Sperm from this species are formed by a meiotic process in which homologous chromosomes pair and segregate but do not undergo crossing-over. How many genetically different kinds of sperm could be produced by a Drosophila melanogaster male (XY)?
A) 4 B) 8 C) 16 D) 64 E) 256
Which gland is associated with daily biorhythms?
a. pineal b. parathyroid c. thymus d. pituitary e. thymus
Which of the following are benefits of cardiorespiratory fitness?
What will be an ideal response?