Microbial diversity in humans
What will be an ideal response?
is low
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Which of the following factors has delayed the development of laboratory-based genetic systems in Archaea?
A) There are no documented systems of conjugation in Archaea. B) Homologous recombination does NOT occur in Archaea. C) Archaea do NOT host viruses or plasmids. D) Many archaea grow in extreme or unusual conditions that make the use of agar and traditional mutant screening techniques problematic.
The olfactory nerve is made up of:
A. chemosensitive hairs. B. axons of interneurons. C. axons of olfactory sensory neurons. D. dendrites of olfactory sensory neurons.
ATP can be used as the cell's energy exchange mechanism because
A) endergonic reactions can be fueled by coupling them with the formation of ATP from ADP. B) ATP is the most energy-rich small molecule in the cell. C) endergonic reactions can be fueled by coupling them with the hydrolysis of high-energy phosphate bonds in ATP. D) ATP is a disposable form of chemical energy, used once and then discarded by the cell.
Which of the following CANNOT be repaired by nucleotide excision repair (NER)?
A. chemically modified bases B. ultraviolet-induced damage C. missing bases D. mismatched bases E. pyrimidine dimers