Why is human chorionic gonadotropin (hCG) important early in pregnancy?
A) guides the embryo to the appropriate site for implantation
B) promotes cleavage of the zygote
C) prevent other sperm from fertilization the oocyte
D) prods the corpus luteum to continue producing hormones
E) promotes menstruation
D
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How many primary types of RNA play roles in protein synthesis within cells?
a. two b. three c. four d. five e. six
Decreased blood flow to a muscle could result in all of the following except
A) muscle fatigue. B) an oxygen debt. C) an increase in intracellular glycogen. D) a shift to anaerobic glycolysis. E) an increase in intracellular lactate.
The rough endoplasmic reticulum is covered with
A. Golgi apparatus. B. lysosomes. C. ribosomes. D. nucleoli.
The ____ glands in the mucous membrane lining the mouth secrete small amounts of saliva
a. parotid b. submaxillary c. sublingual d. buccal