"What is DNA polymerase proofreading?"
Answer: DNA pol has the ability to fix an error in the DNA sequence via its 3'-->5' exonuclease activity. The caveat is that the error has to be recognized immediately in order for the error to be corrected.
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Five new individuals were added to this small population in 1986 and ten more were added between 1990-1994. According to the figure above, what occurred in this population after these additions?
A) The population increased exponentially. B) The population increased in overall numbers. C) The population growth rate increased. D) The population continued to decline
In a reflex arc, the correct sequence of cell types through which an electrical signal would pass would be
A. motor neuron ? sensory neuron ? interneuron in the PNS B. sensory neuron ? interneuron in the CNS ? motor neuron C. sensory neuron ? motor neuron ? interneuron in the CNS D. motor neuron ? interneuron in the PNS ? sensory neuron
During cellular respiration, energy in glucose
A) becomes stored in molecules of ammonia. B) is used to manufacture glucose. C) is released all at once. D) is carried by electrons.
Animal cells are permeable to water and urea but NOT to sucrose. The inside of a cell contains 1 M sucrose and 1 M urea and the outside 1 M sucrose and 2 M urea. The solution inside with respect to outside the cell is
A. hypotonic. B. hypertonic. C. isotonic. D. turgid. E. saturated.