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TLS Online TPP Program

#Question id: 2927

Site-directed mutagenesis of Tyr-15 to Phe in cdc2:

#Unit 2. Cellular Organization

  1. results in the wee mutant phenotype.

  2. results in a phenotype similar to that caused by mutation in cdc25.

  3. increases the possible number of phosphate groups on Cdc2.

  4. prevents binding of Cdc13.

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TLS Online TPP Program

#Question id: 10583

#Unit 10. Ecological Principles

Suppose you discovered a new species about which youknow only two facts: it is small sized (<10 cm) and short lived (<20 days). Which of the following strategies is most likely to be true for this species?
TLS Online TPP Program

#Question id: 18075

#Unit 13. Methods in Biology

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using
TLS Online TPP Program

#Question id: 31408

#Unit 5. Developmental Biology

The Drosophila Sex-lethal (Sxl) gene is activated in females, but the Sxl protein does not form in males because of: 
TLS Online TPP Program

#Question id: 40

#Unit 1. Molecules and their Interaction Relevant to Biology

Given that the standard free-energy change for the reaction glucose + Pi → glucose 6-phosphate is 13.8 kJ/mol, and the standard free-energy change for the reaction ATP → ADP + Pi is −30.5 kJ/mol, what is the free-energy change for the reaction glucose + ATP → glucose 6-phosphate + ADP?
TLS Online TPP Program

#Question id: 17216

#Unit 7. System Physiology – Animal

What do you mean by negative feedback system?