After birth, which hormone causes the uterus to "shrink" and also causes the mother's breast tissue to contract forcing
milk into the ducts?
a. estrogen
b. prolactin
c. progesterone
d. oxytocin
e. HCG
ANSWER: d
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Proteins derived from infecting viruses are taken up and digested in the cytoplasm in a structure called the
A) phagosome. B) liposome. C) proteasome. D) nucleosome.
The term evolution is used to describe
A. heritable changes in characteristics of a population from one generation to the next. B. any change in an individual that can be observed. C. changes in the number of individuals in a population due to mating. D. the ability of an individual organism to pass on what it has learned, through experience, to the next generation. E. any change in an individual organism that occurs in somatic cells.
Which enzyme in the glycolytic pathway acts as a switch that can be regulated by ATP, AMP, and citrate?
a. pyruvate kinase b. triosephosphate isomerase c. aldolase d. ATP synthase e. phosphofructokinase
Which is false regarding passive transport?
a. It depends on concentration or electrical gradients. b. It involves weak binding between solute and protein. c. It requires an energy input. d. It depends on protein shape change. e. None of these are false.