Finding: Ancestry have similar organizations with conservation of the positions (of at least some) of the introns.

Example: The globin and DHFR genes are examples of a genes that share a common ancestor

TLS Online TPP Program

#Question id: 27077

#Unit 1. Molecules and their Interaction Relevant to Biology

The van der Waals interaction as a function of interatomic distance r (on x axis) which of the following graph is correctly representing the relation between attractive and repulsive region vs interatomic distance r

TLS Online TPP Program

#Question id: 27078

#Unit 1. Molecules and their Interaction Relevant to Biology

The combined repulsive and attractive van der Waals terms are described by plots of the potential energy as a function of interatomic separation distance

Which of the following's assumptions can be drawn from given graph related phenomenon

1. As the interatomic distance increases attractive forces act dominantly by the factor of 1/r¹² 

2. As the interatomic distance increases attractive forces act dominantly by the factor of 1/r⁶ 

3. As the interatomic distance decreases repulsive forces act dominantly by the factor of 1/r⁶ 

4. As the interatomic distance decreases repulsive forces act dominantly by the factor of 1/r¹² 

TLS Online TPP Program

#Question id: 27079

#Unit 1. Molecules and their Interaction Relevant to Biology

The van der Waals interaction as a function of interatomic distance r, then which of the following equation is correct 

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