Levels of Protein Structure and Function
- Previous year questions on Levels of Protein Structure and Function for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Biochemistry section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 26 live questions in Levels of Protein Structure and Function.
- 6 of 26 questions carry a verified exam year: 2017, 2019.
- Biochemistry is worth about 16 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.Protein disulphide isomerase is involved in
- AProtein synthesis
- BProtein degradation
- CProtein folding✓ Correct answer
- DProtein quaternary structure formation
Q2.Immune complex formation, which structure of a protein is involved?
- APrimary
- BSecondary
- CTertiary
- DQuaternary✓ Correct answer
Q3.Salting out process involves
- APrecipitation of proteins using ammonium sulphate✓ Correct answer
- BPrecipitation of proteins using sodium chloride
- CPrecipitation of proteins usingcopper sulphate
- DNone of these
Q4.Which structure of Protein is not denatured after heating upto100 degree?
- APrimary✓ Correct answer
- BSecondary
- CTertiary
- DQuaternary
Q5.Bends in alpha helix structure are formed by which amino acid?
- AGlycine✓ Correct answer
- BLysine
- CMethionine
- DGlutamine
Q6.Which of the following interactions contributes most in protein folding?
- ACovalent Bond
- BIonic interactions
- CHydrophobic✓ Correct answer
- DVander waal's interaction
Q7.Type of collagen maximum in skin:-
- AType I✓ Correct answer
- BType II
- CType III
- DType IV
Q8.Most abundant amino acids found in collagen;
- AGlycine✓ Correct answer
- BProline
- CHydroxyproline
- DLysine
Q9.Several segments of the polypeptide chain of integral membrane proteins usually span the lipid bilayer. These segments frequently
- AAdopt an a-helical configuration✓ Correct answer
- BContain many hydrophilic amino acids
- CForm covalent bonds with cholesterol
- DContain unusually strong peptide bonds
Q10.Misfolding of proteins is associated with the following except
- AAlzheimer's disease
- BBovine spongiform encephalopathy
- CTuberculosis✓ Correct answer
- DCystic fibrosis
Answer key
Q1: C. Protein folding; Q2: D. Quaternary; Q3: A. Precipitation of proteins using ammonium sulphate; Q4: A. Primary; Q5: A. Glycine; Q6: C. Hydrophobic; Q7: A. Type I; Q8: A. Glycine; Q9: A. Adopt an a-helical configuration; Q10: C. Tuberculosis.
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