The hormone produced by cells around the embryo that maintains the corpus luteum and pregnancy is called

A. estrogen.
B. progesterone.
C. human chorionic gonadotropin (HCG).
D. follicle-stimulating hormone (FSH).
E. luteinizing hormone (LH).


Answer: C

Biology & Microbiology

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Match the following items:

A) trinucleotide tandem repeats B) tandem repeats C) unique DNA D) interspersed repeats 1) satellite DNA 2) centromeres 3) useful in RFLP analysis 4) Alu family 5) telomeres 6) VNTR 7) Huntington's disease 8) microsatellite DNA 9) myotonic distrophy 10) transposable elements

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Pangea, the name given to the supercontinent that existed before continental drift, was coined by:

a. Sir Francis Bacon. b. Alfred Wegener. c. Harry Hess. d. Edward Suess. e. Sir Alistair Hardy.

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The ______ ____ is where nerves cross over in the eye

Fill in the blank(s) with the appropriate word(s).

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Animals that effectively use their body surface for gas exchange must

A) be terrestrial. B) have a high ratio of body surface area to volume. C) have a low ratio of body surface area to volume. D) have a special kind of hemoglobin.

Biology & Microbiology