Aminoglycosides act through which of the following mechanisms?
A. inhibition of protein synthesis
B. disruption of cell wall synthesis
C. inhibition of DNA synthesis
D. inhibition of mRNA synthesis
E. inhibition of nucleotide synthesis
Ans: A. inhibition of protein synthesis
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Which part of a phospholipid is hydrophobic?
a. the charged phosphate group b. the variable group c. the fatty acid chain d. the uncharged phosphate group
Glycolysis is a metabolic process that is conducted by nearly all cells. However, in addition to glycolysis, some cells also make use of another metabolic process called the Krebs cycle. What does this tell you about the evolution of these processes?
A. Both the Krebs cycle and glycolysis likely evolved at the same time B. As a metabolic process, glycolysis likely evolved prior to the Krebs cycle C. As a metabolic process, the Krebs cycle likely evolved prior to glycolysis
Lymph contains red blood cells
Indicate whether the statement is true or false
Which statement is true about speciation on island archipelagos?
A. Species clusters are less common. B. Speciation by polyploidy is most common. C. Ecological competition may cause new species to go extinct slowing speciation. D. Speciation is slow because it depends on emigration from the mainland. E. Most speciation occurs allopatrically.