What role can inorganic metals such as iron or zinc have in a reaction?
A. A cofactor
B. A coenzyme
C. A substrate
D. A catalyst
Answer: A
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The luteal phase of the ovulation cycle of mammals corresponds to the __________ phases of the estrous cycle
A) Proestrus and estrus B) Estrus and metestrus C) Metestrus and diestrus D) Diestrus and proestrus Fill in the blank with the correct answer.
The large fluid filled cavity within a mature ovarian follicle is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Which abundant antibody is the only one to cross the placental barrier?
A) IgA B) IgM C) IgD D) IgG E) IgE
Which of the following correctly describes thalidomide?
A. It is able to cause birth defects only during the first week of pregnancy. B. It is associated with fetal alcohol syndrome. C. It is a radioactive mutagen. D. It is a teratogen. E. It is a major cause of neural tube defects.