With respect to chromosomes, the difference
between normal human males and females is defined
by which of the following?
a. In females, one X is deleted.
b. Females possess one X and one Y.
c. Males possess an X and a Y.
d. Females have three Xs.
e. Males have two Xs and a Y.
Answer: c
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Which of the following accurately describes the path travelled by a new protein as it is synthesized and released from the cell?
A. plasma membrane ER transport vesicle Golgi cytosol external environment B. cytosol ER Golgi transport vesicle plasma membrane external environment C. nuclear envelope ER transport vesicle Golgi plasma membrane external environment
Of the three plants measured in the figure, which requires water to allow sperm to swim to the egg?
A. shrubs
B. All of the plant groups rely on sperm swimming to the egg in water.
D. None of the plant groups relies on sperm swimming to the egg in water.
D. mosses
E. herbs
Which of the following is mismatched?
a. cytokinin; promotes cell division b. abscisic acid; triggers bud and seed dormancy c. ethylene; breaks dormancy of seeds and buds d. auxin; involved in phototropism and gravitropism e. nitric oxide; involved in plant defense responses
Which of the following is an accurate description of climate patterns that result from supercontinent cycles?
A. Climate is generally cooler and drier at the margins of supercontinents compared to the interior. B. During the Mesozoic, Gondwana passed over the South Pole and experienced extensive glaciation. C. Temperature extremes were common in the interior of Pangaea at end-Permian due to its massive size. D. Supercontinental breakup can cause global warming, suggested by the breakup of Rodinia at the end of the Proterozoic.