Practice Questions

TLS Online TPP Program

#Question id: 736

The most important contribution to the stability of a protein’s conformation appears to be the:

#Unit 1. Molecules and their Interaction Relevant to Biology

entropy increase from the decrease in ordered water molecules forming a solvent shell around it.
maximum entropy increase from ionic interactions between the ionized amino acids in a protein.
sum of free energies of formation of many weak interactions among the hundreds of amino acids in a protein.
sum of free energies of formation of many weak interactions between its polar amino acids and surrounding water.

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TLS Online TPP Program

#Question id: 30066

#Unit 7. System Physiology – Animal

When the cholinergic vagal fibers to nodal tissue are stimulated, Membrane becomes:

TLS Online TPP Program

#Question id: 34094

#Unit 3. Fundamental Processes

The rate of eukaryotic replication is 2000 bp/min and replicon size is 40kb. How much time it will take replicate entire human chromosome

TLS Online TPP Program

#Question id: 427

#Unit 1. Molecules and their Interaction Relevant to Biology

The degradation of which class of biochemicals does not significantly contribute to the release of energy to cells?

TLS Online TPP Program

#Question id: 27669

#Unit 1. Molecules and their Interaction Relevant to Biology

When Psi is fixed at +165º then allowed region -70º to -170º then this allowed region belong to

(a) Left-handed helix

(b) Right-handed helix

(c) Parallel beta sheet

(d) Antiparallel beta sheet

Choose which of the following is correct

TLS Online TPP Program

#Question id: 2828

#Unit 2. Cellular Organization

A transcriptionally active gene compared with a transcriptionally inactive gene would be expected to

a. contain acetylated histones.

b. contain unacetylated histones.

c. be sensitive to DNase I.

d. be resistant to DNase I.