The impacts of the microbial types that inhabit cross-sections of water sediment are vast. Consider that sediments deep beneath water surfaces are home to perhaps ________ of the world's bacterial and archaeal biomass.
A. 50%
B. 10%
C. 20%
D. 95%
Answer: A
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After an action potential is triggered, the rapid increase in membrane potential can be attributed to
A. the closing of potassium leak channels. B. the opening of the voltage-gated potassium channels. C. the closing of sodium leak channels. D. the direction reversal of the sodium/potassium pump. E. the opening of voltage-gated sodium channels.
You look into a powerful microscope and see a
single-celled organism that is very small, has a cell wall, and no nucleus. You conclude that this organism belongs to the domain,
a. Eukarya. b. Eukarya or Archaea. c. Archaea. d. Bacteria. e. Arachea or Bacteria
The binding signal recognition particle to the nascent peptide______ protein synthesis
Fill in the blank(s) with the appropriate word(s).
Gravitropism is defined as
A. growth in response to the force of gravity. B. gravity's pull on certain plant organs. C. any response to gravity that changes cell structures. D. growth in response to the Earth's magnetic field. E. growth mostly away from gravity.