NCERT Biology Class 11, Chapter 9
Carbohydrates proteins lipids nucleic acids MCQs for NEET-UG Biology
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Last updated: July 30, 2026
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- Mark examples and exceptions because NEET Biology questions often test exact wording.
- Review every wrong option after practice so close distractors become easier to eliminate.
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- Separate NCERT-level facts from advanced details that are not needed for NEET-UG.
Practice plan
Start with 10 questions from this topic, review the explanation for every wrong answer, then repeat the same topic after revising the NCERT paragraph.
Carbohydrates proteins lipids nucleic acids FAQs
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Which of the following is not a known cell-to-cell communication molecule?
Q2 • NCERT Biology Class 11, Chapter 9Which of the following are considered small molecules within cells?
Q3 • NCERT Biology Class 11, Chapter 9The main chemical components of biological membranes are
Q4 • NCERT Biology Class 11, Chapter 9Which of the following statements about structural domains is correct?
Q5 • NCERT Biology Class 11, Chapter 9Which of the following statements about protein biosynthesis is incorrect?
Q6 • NCERT Biology Class 11, Chapter 9Which amino acid in proteins can potentially undergo phosphorylation?
Q7 • NCERT Biology Class 11, Chapter 9In protein quantification, the absorbance value at 280nm (A 280 ) is often used for calculation. The ability of proteins to absorb ultraviolet light mainly depends on
Q8 • NCERT Biology Class 11, Chapter 9In protein secondary structure, which of the following amino acid residues cannot form an α-helix due to its presence?
Q9 • NCERT Biology Class 11, Chapter 9The order of gastric emptying speed from fastest to slowest for the three major nutrients is
Q10 • NCERT Biology Class 11, Chapter 9The basic structural unit of a nucleic acid molecule is
Q11 • NCERT Biology Class 11, Chapter 9Which of the following is composed of nitrogen bases, pentose sugar, and phosphate?
Q12 • NCERT Biology Class 11, Chapter 9Which of the following can be used to obtain the target gene?
Q13 • NCERT Biology Class 11, Chapter 9Which of the following does not directly participate in protein synthesis?
Q14 • NCERT Biology Class 11, Chapter 9Which of the following amino acids does not participate in protein composition?
Q15 • NCERT Biology Class 11, Chapter 9Which of the following amino acids is a potential site for protein phosphorylation?
Q16 • NCERT Biology Class 11, Chapter 9Which of the following statements about genetic codes is incorrect?
Q17 • NCERT Biology Class 11, Chapter 9The nutritional value of proteins mainly depends on
Q18 • NCERT Biology Class 11, Chapter 9Which of the following statements about the interaction between nucleic acids and proteins is incorrect?
Q19 • NCERT Biology Class 11, Chapter 9Which of the following are primarily used for energy supply in the body?
Q20 • NCERT Biology Class 11, Chapter 9Ribonuclease is composed of a single polypeptide chain, and its spatial structure is maintained by four intramolecular disulfide bonds. When urea and β-mercaptoethanol are added to the enzyme solution, enzyme activity is lost; when urea and β-mercaptoethanol are removed through dialysis, the enzyme regains its original biological activity. This phenomenon indicates
Q21 • NCERT Biology Class 11, Chapter 9The spatial structure of proteins mainly depends on the sequence of amino acids in the peptide chain.
Q22 • NCERT Biology Class 11, Chapter 9Which of the following compounds in a cell is a biological macromolecule?
Q23 • NCERT Biology Class 11, Chapter 9The main function of the Golgi apparatus is