I. Make your best choice for each of the following Which of the following struct

Question

I. Make your best choice for each of the following Which of the following structure of a protein is stabilized majorly by hydrogen bonding A) Primary B) Secondary 1. Tertiary D) Quaternary E) None of the above 2. Which of the following is the binding site of hemoglobin to O A) polypeptide chain B) polypeptide chain C) N terminal of polypeptide chain D) Fe2* in the prosthetic group E) C terminal of each polypeptide chain 3. Rotation around which type of the following bond is greatly hindered in peptides? A) c) D) E) D 4. Which of the following is correct about 'amyloid A. It is a polysaccharide aggregate B. It is a protein structurally similar to amylose C. It is a aggregates of misfolded proteins D. It is a protein that can be hydrolyzed by amylase E. None of the above

Explanation / Answer

1. B (because the secondary structure of protein is stabilized by hydrogen bonding betweenA-T and G-C bases)

2. D (hemeglobin is oxygen binding protein and in the active site te Fe(II) is bind with oxygen)

3.C (the H is in the same plane of peptide and rotation along this bond will force to rotate the peptide in and out of plane , which is not favorable)

4. none of the above ( amyloid is a well shaped folded protein and it is not a starch but starch like. amylase hydrolyze starch and amylose is a polysaccharide)

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