A 55-year-old man has been diagnosed with Stokes-Adams syndrome. Two minutes after the syndrome starts to cause active blockade of the cardiac impulse, which of the following is the pacemaker of the heart?

TLS Online TPP Program

#Question id: 743

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycophorin, an integral membrane protein, has a single transmembrane alpha helix. Which of the following idealized hydropathy plots most likely represents the transmembrane nature of glycophorin?

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: