Explore topic-wise MCQs in Protein Engineering.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Protein Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

Helix capping is the phenomenon in which, the side chains of which two flanking residues fold back to form hydrogen bonds with one of the four-terminal residues of the helix?

A. Pro, Val
B. Gly, Val
C. Val, Ile
D. Asn, Gln
Answer» E.
2.

Which disease is caused by the regular ingestion of the seeds from the sweet pea?

A. Scurvy
B. Diabetes
C. AIDS
D. Lathyrism
Answer» E.
3.

Which disease results from the dietary deficiency of vitamin C?

A. Jaundice
B. Malaria
C. Cancer
D. Scurvy
Answer» E.
4.

Which is the most abundant protein in all vertebrates?

A. Keratin
B. Tapasin
C. Connexin
D. Collagen
Answer» E.
5.

Which among the following are the principal component of the outer layer of the skin (epidermis) and its related appendages, such as hair, horn, nails, and feathers?

A. Calrectin
B. Connexin
C. Collagen
D. Keratin
Answer» E.
6.

Parallel beta-sheets are more stable than antiparallel beta-sheets.

A. True
B. False
Answer» C.
7.

Regular secondary structures such as alpha-helices or the strands of beta-sheets are often connected by a stretch of a polypeptide that changes direction abruptly. What are these structures?

A. Incomplete sheets
B. Inverse helix
C. Small helix
D. Turns or beta-bends
Answer» E.
8.

Beta-sheets are sometimes also called as “pleated sheets”.

A. False
B. True
Answer» C.
9.

The peptide C=O bond of the nth residue of the backbone of alpha-helix points along and forms a hydrogen bond with the peptide N—H group of which among the following residue?

A. (n+1)th
B. (n+2)th
C. (n+3)th
D. (n+4)th
Answer» E.
10.

What are the pitch length of alpha-helix and the number of residues per turn?

A. 5.3 Armstrong, 6.4 residues
B. 3.4 Armstrong, 5.6 residues
C. 3.6 Armstrong, 5.4 residues
D. 5.4 Armstrong, 3.6 residues
Answer» E.
11.

The alpha-helix is a right-handed helix.

A. False
B. True
Answer» C.
12.

Who discovered the alpha-helix structure in a protein molecule?

A. Lynn Margulis
B. Francis Collins
C. Louis Pasteur
D. Linus Pauling
Answer» E.
13.

What are the most common regular secondary structures found in proteins?

A. Alpha-helix and turns
B. Beta-sheets and loops
C. Loops and turns
D. Alpha-helix and beta-sheets
Answer» E.
14.

The peptide group in a protein has a rigid, planar structure. Which interactions give the peptide bond its partial double bond character?

A. Covalent
B. Non-covalent
C. Hydrophobic
D. Resonance
Answer» E.
15.

Which among the following structure represents the local spatial arrangement of a polypeptide without regard to the conformation of its side chains?

A. Primary structure
B. Tertiary structure
C. Quaternary structure
D. Secondary structure
Answer» E.