TLS Online TPP Program

#Question id: 2142


Glucose transport into erythrocytes is an example of

#Unit 2. Cellular Organization
  1. active transport.

  2. antiport.

  3. electrogenic uniport

  4. facilitated diffusion.

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TLS Online TPP Program

#Question id: 738

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct for peptide bonds

A) C and N are shorter than typical C-N bonds.

B) C and N are longer than typical C-N bonds.

C) C and O are longer than typical C=O bonds.

D) C and O are shorter than typical C=O bonds.

TLS Online TPP Program

#Question id: 739

#Unit 1. Molecules and their Interaction Relevant to Biology

What is true about the rotation about bonds in a protein backbone?

TLS Online TPP Program

#Question id: 740

#Unit 1. Molecules and their Interaction Relevant to Biology

The conformation of the backbone of a polypeptide is described completely by the angle(s) of rotation about which bond(s)?

TLS Online TPP Program

#Question id: 741

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of following statements are INCORRECT about secondary structure of proteins

A. Long block of Glu residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value

B. Long block of Lys residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation above its pKR value

C. Long block of Ala residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value

D. Histidine side chain remain uncharged over pH range 3-6

TLS Online TPP Program

#Question id: 742

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Conformation

Phi

Psi

Omega

A. Alpha helix

I. -57

P. -47

X. 180

B. B sheet

II. -135

Q. +135

Y. 0

C. Polyproline I

III. -83

R. +158

D. Polyproline II

IV. -78

S. +149

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?