Suppose that nondisjunction occurs during meiosis II in oogenesis, and each of the resulting four cells is fertilized with a normal sperm (imagine four functional egg cells result from oogenesis). How many cells are normal and how many have a chromosomal trisomy?

A. three, one
B. one, three
C. two, one
D. one, two
E. two, two


Answer: C

Biology & Microbiology

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An action potential is a brief reversal of the

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

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The covalent bonds connecting monomer units in sugars can be formed by the removal of a water molecule. This reaction is referred to as:

A. a dehydration reaction. B. a hydration reaction. C. a hydrolysis reaction. D. an oxidation-reduction reaction.

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The type of ion found in high concentrations in the sarcoplasmic reticulum is ________

Fill in the blank(s) with correct word

Biology & Microbiology

The reacting molecules in an enzyme-catalyzed reaction are called ________.

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

Biology & Microbiology