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TLS Online TPP Program

#Question id: 2214

Which of the following is true about glucose transporters?

#Unit 2. Cellular Organization

  1. GLUT-2 and GLUT-4 are expressed on all cell types.

  2. All the members of the GLUT family have the same affinity for glucose.

  3. Cells that express GLUT-1 and GLUT-3 display more glucose uptake than cells expressing GLUT-2 at physiological blood concentrations (5 mM).

  4. GLUT proteins are specific for glucose molecules and will not transport other sugars.

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TLS Online TPP Program

#Question id: 27664

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly representing the distance between two successive C α Carbon in a peptide chain
TLS Online TPP Program

#Question id: 27665

#Unit 1. Molecules and their Interaction Relevant to Biology

There are few statements is given regarding the peptide bond configuration in a chain

(a) The peptide bond is normally (99.6% of the time) in the trans configuration, constraining  to a value of w=+_180

(b) The peptide bond is normally (99.6% of the time) in the Cis configuration, constraining  to a value of w=+_180

(c) In the trans configuration of peptide bond C and C=O lies in the Same plane while in different plane in case of cis configuration 

(d) In the trans configuration of peptide bond C and C=O lies in the different plane while in same plane in case of cis configuration 

Choose which of the following is correct
TLS Online TPP Program

#Question id: 27666

#Unit 1. Molecules and their Interaction Relevant to Biology

Co and N atoms of the peptide bond are both in
TLS Online TPP Program

#Question id: 27667

#Unit 1. Molecules and their Interaction Relevant to Biology

There are few statements is given regarding the peptide bond are given

(a) For most peptide bonds the ratio of cis to trans configurations is approximately 1:1000

(b) Peptide bonds formed between Xaa and proline (Xaa is any amino acid) the cis to trans ratio is 1:4

(c) Co and N atoms of the peptide grouping are both in planar sp2 hybridization 

(d) All three kinds of bonds (N-Ca, Ca-Co, and the Co-N peptide bond) are single bonds

(e) The peptide bond is estimated to have 40% double bond character

Choose which of the following is correct 
TLS Online TPP Program

#Question id: 27668

#Unit 1. Molecules and their Interaction Relevant to Biology

In a peptide bond the true electron density is intermediate. The barrier to C-N bond rotation/to keep the amide group planar requires of about
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