TLS Online TPP Program

#Question id: 484


Galactosemia is a genetic error of metabolism associated with:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. deficiency of galactokinase.

  2. deficiency of UDP-glucose.

  3. deficiency of UDP-glucose: galactose 1-phosphate uridylyltransferase.

  4. excessive ingestion of galactose.

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TLS Online TPP Program

#Question id: 18812

#Unit 13. Methods in Biology

In human normal B and T cells develop the CDC4+ and CDC8+ first and then they differentiate to CDC4+ CDC- and CDC4- CDC+. If there is a defect in development which quadrant in the flow cytometer graph will show more density?

TLS Online TPP Program

#Question id: 404

#Unit 1. Molecules and their Interaction Relevant to Biology

When a mixture of 3-phosphoglycerate and 2-phosphoglycerate is incubated at 25 °C with phosphoglycerate mutase until equilibrium is reached, the final mixture contains six times as much 2-phosphoglycerate as 3-phosphoglycerate.  Which one of the following statements is most nearly correct, when applied to the reaction as written?  (R = 8.315 J/mol·K; T = 298 K)  3-Phosphoglycerate -> 2-phosphoglycerate

TLS Online TPP Program

#Question id: 2674

#Unit 2. Cellular Organization

Most gene regulation happens at which step along the way?

TLS Online TPP Program

#Question id: 10670

#Unit 10. Ecological Principles

To estimate the number of foxes in an area, a researcher conducted a mark-recapture survey. In the first survey, he caught and marked N number of foxes. In his second survey a week later, he caught 120 foxes of which 90 were unmarked (recaptures). If you are told that the actual number of foxes in this area is 400, what is value of N in this area?

TLS Online TPP Program

#Question id: 17079

#Unit 12. Applied Biology

The major disadvantages of using serum in the culture medium could be