A bacterium running low on NADPH could ________ to generate more of this coenzyme
A) degrade an amino acid or nucleic acid
B) invoke the pentose phosphate pathway
C) degrade a fatty acid
D) use a broad specificity phosphatase with inorganic phosphatase and NADH
Answer: B
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Which of the following is not important in getting oxygen from the alveoli into the capillaries?
A. The difference in oxygen concentration in the blood compared to the alveoli B. The number of alveoli and capillaries present C. The thickness of the capillary-alveolus wall D. The number of nitrogen molecules present in the lungs
What is one reason why many mutations may be deleterious? (This question ties in information from other chapters.)
A. Because the genetic code has redundancy built in. B. Because if a mutation changes the primary structure of a protein, the protein may no longer work. C. Because the body has no way to detect or correct mutations. D. Most mutations are actually beneficial, not deleterious. E. Any change in the DNA sequence means that DNA no longer functions properly.
The fourteen species of finch native to the Galapagos Islands
a. were victims of a mass extinction there b. evolved from a single common ancestor c. migrated in waves from South America d. evolved after a mass extinction of birds that previously lived in the islands e. were victims of a mass extinction there
Which of the following types of pathogens cause sexually transmitted diseases that are generally NOT curable?
A) bacteria B) viruses C) fungi D) insects