Practice Questions

TLS Online TPP Program

#Question id: 542

Hamsters love to run on exercise wheels. Prolonged running at a high rate of speed requires ATP. Could a hamster with a defective gene for the enzyme lactate dehydrogenase meet the extra ATP demand for prolonged, fast wheel-running by maintaining a high rate of glycolysis? Why or why not?

#Section 4: Fundamentals of Biological Engineering

No, not enough NAD+ can be regenerated for glycolysis to continue at a high rate.
No, the defective gene will cause a rapid decline in pH in the muscles used for running.
Yes, the defective enzyme has no effect on the glycolytic pathway.
Yes, the enzyme alcohol dehydrogenase will supply the needed NAD+ if the lactose dehydrogenase cannot.

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TLS Online TPP Program

#Question id: 3338

#Section 3: Genetics, Cellular and Molecular Biology

If the expected frequency of heterozygotes in a population (based on the Hardy–Weinberg law) is 0.4, but the observed frequency is 0.2, what is the inbreeding coefficient?

TLS Online TPP Program

#Question id: 4916

#Section 3: Genetics, Cellular and Molecular Biology

Kappa particles indicate

TLS Online TPP Program

#Question id: 4127

#Section 3: Genetics, Cellular and Molecular Biology

Which one of the following statements about ribosomes is true?

TLS Online TPP Program

#Question id: 1961

#Section 2: General Biology

Which action below is affected by an antihistamine?