Character changes in molecular sequences are generated by
a. insertions.
b. deletions.
c. substitutions.
d. base pairing.
e. insertions, deletions, and substitutions.
E
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To what level of organization does a protein belong?
A. Organ system level B. cellular level C. chemical level D. tissue level E. organ level
The primary energy source for termites comes from
A) acetogenic Archaea. B) acetogenic Bacteria. C) methanogenic Archaea. D) methanogenic Bacteria.
The pressure required to stop water from moving across the membrane by osmosis is called
A. transport pressure. B. crenation pressure. C. atmospheric pressure. D. osmotic pressure. E. mechanical pressure.
Without ____, living organisms would often experience major changes in pH in their cells
a. buffers b. acids c. surface tension d. nonpolar bonds e. bases