Practice Questions

TLS Online TPP Program

#Question id: 16961

Which statements is not true for Divergent evolution?

#Unit 11. Evolution and Behavior

Change in gene pool results in sudden evolution of new population, species, family, groups
At molecular level, Similar group of organisms with mutations and variations getting naturally selected in different environments
Divergent selection is the accumulation of differences between closely related populations between a species
found in different habitat and leading to speciation

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TLS Online TPP Program

#Question id: 27080

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statement about Vander-wall interaction

1. Van der Waals potential (E_vdw) is the sum of all interactions over all atoms

2. Van der Waals potential (E_vdw) is calculated by

3. This type of interaction is often called a 6–12 interaction, or the Leonard Jones potential.

4. Van der Waals forces are extremely weak, especially when compared with other forces influencing protein conformation

TLS Online TPP Program

#Question id: 27081

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly describing the A dihedral angle or torsion angle

TLS Online TPP Program

#Question id: 27082

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement regarding β -turns

TLS Online TPP Program

#Question id: 27083

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly describing the differences between β Turn type I & β Turn type II

(1) type I & II i + 1 values differ only in psi values

(2) type I & II i + 1 values differ only in phi values

(3) type I & II i + 2 values differ only in phi values

(4) type I & II i + 2 values differ only in psi values

TLS Online TPP Program

#Question id: 27084

#Unit 1. Molecules and their Interaction Relevant to Biology

How many bonded atoms are required to constitute a dihedral (torsion) angle, such as phi or psi?

TLS Online TPP Program

#Question id: 27085

#Unit 1. Molecules and their Interaction Relevant to Biology

The number of phi and psi angles in an isolated amino acid (not in a polypeptide chain) is: