If a woman in labor's cervix had dilated, but her contractions remain too weak and is failing in progress, she may be given a synthetic form of __________ to stimulate stronger and consistent contractions.
A. oxytocin
B. progesterone
C. estrogen
D. calcium
E. testosterone
A. oxytocin
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If a lung were to be found in a mollusc, where would it be located?
A) mantle cavity B) coelom C) incurrent siphon D) visceral mass E) excurrent siphon
Viruses that infect bacteria are referred to as
A. viralcidens. B. bacteriocidins. C. bacterialogens. D. bacteriophages.
The simultaneous movement of Na+ out of a cell against its concentration gradient and protons into a cell with their concentration gradient is best described as an example of
a. symport. b. passive diffusion. c. antiport. d. facilitated diffusion. e. active transport
What is true for both male and female gametogenesis? (Choose all that apply.)
A. Gametes develop in the gonads. B. Gametes are produced by meiosis. C. Each primary cell results in four gametes. D. Primary cells are haploid.