Practice Questions

TLS Online TPP Program

#Question id: 11341

Why can’t triacylglycerols be significant components of lipid bilayers?

#Unit 2. Cellular Organization

Triacylglycerols lack nonpolar head groups, so they do not orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.
Triacylglycerols lack polar head groups, so they orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.
Triacylglycerols lack polar head groups, so they do not orient themselves in a bilayer with their acyl chains inward and their glycerol moiety toward the surface.
Triacylglycerols lack polar head groups, so they do not orient themselves in a bilayer with their glycerol moiety inward and their acyl chains toward the surface

More Questions

#Question id: 27642

#Unit 1. Structure and Function of Biomolecules

Choose the incorrect statement regarding β-turns

#Question id: 27643

#Unit 1. Structure and Function of Biomolecules

Which of the following is correct regarding the Type I β turn positions in Ramachandran plot

#Question id: 27644

#Unit 1. Structure and Function of Biomolecules

#Question id: 27645

#Unit 1. Structure and Function of Biomolecules

Which of the following is correct regarding the β turns

(1) In Type I β turn i+1 lies in RHH region while i+2 lies near BS region

(2) In Type II β turn i+1 lies in BS while i+2 lies in below LHH

(3) In Type I’ β i+1and i+2 in near LHH which virtually not allowed region for most of amino acid except Gly

(4) In Type II’ β i+2 lies at 00 psi and i+1 in lower right region both i+2 and i+1 must be Gly

#Question id: 27664

#Unit 1. Structure and Function of Biomolecules

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

#Question id: 27665

#Unit 1. Structure and Function of Biomolecules

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