Dr. Askins performs an electrophysiology experiment. She records a neuron at rest. What voltage does she record?
a. -70 mV
b. -55 mV
c. +35 mV
d. +55 mV
e. +70 mV
a
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The deep-sea vent hypothesis for the formation of prebiotic organic molecules is based on
A. temperature gradients of the hot water coming from the vents and cold ocean water. B. hot gaseous substances released from the vents. C. a buildup of radioactive substances around the vents. D. temperature gradients of the hot water coming from the vents and cold ocean water and hot gaseous substances released from the vents are correct answers. E. temperature gradients, proton gradients, and radioactive substances could all lead to the formation of prebiotic organic molecules.
What term is applied to a variety of projects whereby genome sequences are deposited in databases for research purposes?
What will be an ideal response?
Which of the following ecosystems has a very high net primary productivity?
A. desert B. tropical rain forest C. temperate forest D. boreal forest E. tundra
A urine dipstick test can diagnose urinary tract infections by indicating
A) elevated levels of leukocyte esterase. B) the presence of glucose in the urine. C) conversion of nitrite to nitrate in the urine. D) direct detection of Gram-positive or Gram-negative bacteria. E) elevated creatine and BUN levels.