Where would one expect to find the most telomerase?
A. male germ cells that give rise to gametes
B. skin cells from a 60-year-old individual
C. skin cells from a 2-year-old individual
D. a nerve cell from a 60-year-old individual
E. a nerve cell from a 2-year-old individual
A. male germ cells that give rise to gametes
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If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun), how would that change Earth's climate?
A) The equators would not change in climate. B) The South Pole would get colder. C) The equators would get warmer. D) The North Pole would get more wind.
Based on their abundance and location in bacterial genomes, deduce which is LEAST likely to horizontally transfer into another bacterium while maintaining its identical function and regulatory roles
A) heat shock protein-encoding gene B) lac operon C) catabolic regulon D) quorum sensing operon
The most likely explanation for why toothed whales have a blowhole is
A. they evolved from an animal with gills. B. they evolved from an animal with nostrils. C. blowholes are better for large animals. D. blowholes are better for breathing underwater than gills are.
Pulmonary veins carry ____
a. oxygen-rich blood back to the heart b. oxygen-poor blood back to the heart c. oxygen-rich blood away from the heart d. oxygen-poor blood away from the heart e. oxygen-rich blood to and from the heart