Having species within a community that are redundant with respect to ecosystem functions is called
the ____.
a. redundancy hypothesis
b. ecosystem function hypothesis
c. biological insurance hypothesis
d. natural community hypothesis
e. fungal take over hypothesis
C
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What is the role of monoamine oxidase and acetylcholinesterase in the nervous system?
a. To produce neurotransmitter molecules. b. To serve as receptors for neurotransmitter molecules. c. To breakdown neurotransmitter molecules.
George Beadle and Edward Tatum created a collection of mutants to study the following pathway
A mutant shows no growth on minimal media; however it shows growth if citrulline is provided. These results indicate the mutation would most likely be in the gene for: A. Enzyme I. B. Enzyme II. C. Enzyme III D. either Enzyme I or Enzyme II. E. either Enzyme II or Enzyme III.
DNA polymerase can only elongate a piece of DNA or RNA
a. true b. false
A strictly fermentative bacterium produces energy
A) by glycolysis only. B) by aerobic respiration only. C) by fermentation or aerobic respiration. D) only in the absence of oxygen. E) only in the presence of oxygen.