Match the columns and choose the correct option.

Column I	Column II
A.    Progress zone	i.                    thickening of the ectoderm at the apex of the developing limb bud
B.     Apical ectodermal ridge	ii.                  The cells found within the most posterior region
C.     Zone of polarizing activity	iii.                The highly proliferative mesenchyme that fuels limb bud growth

TLS Online TPP Program

#Question id: 666

#Unit 1. Molecules and their Interaction Relevant to Biology

Nearly all peptide bonds are in the trans configuration because

TLS Online TPP Program

#Question id: 667

#Unit 1. Molecules and their Interaction Relevant to Biology

Which represents the backbone of a protein?

Note: R = amino acid side chain

N = nitrogen

Cα = alpha carbon

C = carbonyl carbon

TLS Online TPP Program

#Question id: 668

#Unit 1. Molecules and their Interaction Relevant to Biology

What feature does a Ramachandran plot display?

TLS Online TPP Program

#Question id: 669

#Unit 1. Molecules and their Interaction Relevant to Biology

Ramachandran determined the ʺallowedʺ values of the phi and psi angles primarily by considering ________.

TLS Online TPP Program

#Question id: 670

#Unit 1. Molecules and their Interaction Relevant to Biology

The distance along a helix axis for one complete turn is called the ________.

TLS Online TPP Program

#Question id: 671

#Unit 1. Molecules and their Interaction Relevant to Biology

Which was a major scientific accomplishment by Linus Pauling?