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?

#Unit 1. Molecules and their Interaction Relevant to Biology

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: 3015

#Unit 2. Cellular Organization

All the bacterial cells that result from the replication of a single original bacterial organism are said to be a

TLS Online TPP Program

#Question id: 7512

#General Aptitude

In a stream running at 2 km/h, a motorboat goes 5 km upstream and back again to the starting point in 1 h 20 min. Find the speed of te motor boat in still water.

TLS Online TPP Program

#Question id: 2681

#Unit 2. Cellular Organization

Which of the following is not a character of unique Intergenic DNA?

TLS Online TPP Program

#Question id: 4155

#Unit 3. Fundamental Processes

Of all the possible triplet codons, __ do not code for an amino acid.

TLS Online TPP Program

#Question id: 33528

#Unit 2. Cellular Organization

The Y chromosome has