Which plant is the most fit?
A) a plant with deep roots
B) a plant with large leaves
C) a plant with large flowers
D) Environmental information is required to determine fitness.
D
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What is p53?
A. A caspase B. A proto-oncogene C. A transcription factor D. A tumor suppressing gene E. None of the answers are correct
An oak tree can support hundreds of beetles, caterpillars and other primary consumers. This is an example of
A. a pyramid of biomass. B. excessive levels of primary production. C. an unusually diverse group of primary consumers. D. primary parasitism. E. an inverted pyramid.
Which level of organization is common to all life forms?
A. cell. B. tissue. C. organ. D. organelle. E. colony.
Thymosin is a hormone produced by the thymus gland. If production of thymosin is inhibited, then
A) bone density decreases. B) progesterone production stops. C) T cells do not develop. D) blood glucose levels fluctuate wildly. E) dehydration occurs.