Practice Questions

TLS Online TPP Program

#Question id: 718

Poly- L -leucine in an organic solvent such as dioxane is a helical, whereas poly- L isoleucine is not. Why do these amino acids with the same number and kinds of atoms have different helix-forming tendencies?

#Unit 1. Molecules and their Interaction Relevant to Biology

Leucine has bulky side chain than isoleucine so it forms helix.
Methyl group at γ position of isoleucine cause stearic hindrance and blocks helix formation tendency
Due to the stearic hindrance caused by β carbon- methyl group, isoleucine can’t form helix. Methyl group at γ position of isoleucine cause stearic hindrance and blocks helix formation tendency.
Isoleucine has chiral carbon due to which it can,t form poly-L isoleucine helix.

More Questions

TLS Online TPP Program

#Question id: 4122

#Unit 3. Fundamental Processes

RNA Pol uses its active site, in a simple back-reaction, to catalyze the removal of an incorrectly inserted ribonucleotide. This phenomenon known as

TLS Online TPP Program

#Question id: 23291

#General Aptitude

Suppose your principal is penalizing you deliberately. You do your best efforts to make him happy. But he deals with you as his enemy. What would you do under this situation?

TLS Online TPP Program

#Question id: 1549

#Unit 4. Cell Communication and Cell Signaling

the decision to translate IgM versus IgD heavy chains is made at the level of?

TLS Online TPP Program

#Question id: 11959

#Unit 7. System Physiology – Animal

The process by which digested dietary substances cross cell membranes to be used by the body is known as ________.

TLS Online TPP Program

#Question id: 4178

#Unit 3. Fundamental Processes

The acceptor stem of tRNA consists of the __.