HCG is secreted by the ____
a. blastocyst
b. ovary
c. hypothalamus
d. anterior pituitary
e. uterus
ANSWER: a
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Plant and animals cells are generally _______bacterial cells
a. larger than b. smaller than c. the same size as
Which of the following is an extraembryonic
tissue that burrows into and thus attaches to maternal tissues?
a. the amnion b. the yolk sac c. the chorion d. the blastocyst protein coat e. the inner cell mass
A ________ microscope provides images that are "slices" of the specimen which may be assembled digitally to produce a three-dimensional representation of the specimen.
A. bright-field B. dark-field C. confocal D. phase contrast E. transmission electron
All staphylococci can be differentiated from all streptococci because only staphylococci produce the enzyme _____ that is easily detected in the lab.
Fill in the blank(s) with the appropriate word(s).