AMP is the primary energy and phosphate source in coupled reactions
Indicate whether the statement is true or false.
ANS: F, ATP
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A microbial population can contain several microbial communities
Indicate whether the statement is true or false.
Why is the process of nitrogen fixation by prokaryotes essential?
a. It removes nitrogen from the soil. b. It converts atmospheric nitrogen to a non-toxic form. c. It provides nitrogen sources for plants and animals. d. It provides an energy source for photosynthesis. e. It allows for the breakdown of complex macromolecules.
Retroviruses differ from other RNA viruses by:
a. having reverse transcriptase instead of RNA-dependent RNA polymerase. b. the shape of their capsid. c. the way they infect their host cells. d. the sugar coating on their capsids. e. lytically destroying their hosts
What is one major consequence of acid mine drainage?
a. Lower pH is toxic to microbes, leaving the receiving waters virtually sterile. b. Layers of precipitated iron oxides cause the sediments to become anoxic. c. It contains dissolved heavy metals that are toxic to aquatic organisms. d. Precipitated metals block sunlight.