Biomacromolecules, primary and secondary metabolites — NEET Biology Questions

Practice 30 questions on Biomacromolecules, primary and secondary metabolites from Biomolecules (NCERT Class 11, Chapter 9). Free samples below — get all 30 in the app.

30 Questions Biomolecules Class 11

Sample Questions — Biomacromolecules, primary and secondary metabolites

Try 5 questions below from Biomacromolecules, primary and secondary metabolites. Get all 30 in the MedicNEET app.

MCQ
Identify the biomolecule that acts as an information molecule:
  • A. DNA
  • B. Lipid
  • C. Protein
  • D. Polysaccharide
✅ Correct Answer: A
DNA carries genetic information, functioning as the information molecule.
MCQ
Select all correct statements about secondary metabolites: 1. They include antibiotics, rubber, pigments 2. They are involved in regular metabolic reactions 3. Some have ecological importance 4. Many are industrially useful
  • A. 1 and 2 only
  • B. 1, 3 and 4 only
  • C. 2, 3 and 4 only
  • D. All statements are correct
✅ Correct Answer: B
Statement 2 is incorrect – they are not involved in regular cellular metabolism.
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MCQ
Why are proteins considered heteropolymers?
  • A. They contain DNA
  • B. They are inorganic molecules mixed with organic molecules
  • C. They are made of lipids and amino acids
  • D. They contain more than one kind of amino acid
✅ Correct Answer: D
Proteins are formed from 20 different types of amino acids, hence heteropolymers.
MCQ
What inference can be drawn if a compound is classified as a heteropolymer?
  • A. Made from identical monomers
  • B. Always a polysaccharide combined with other molecules
  • C. Contains chemically distinct repeating units
  • D. Contains fats along with other molecules
✅ Correct Answer: C
Heteropolymers are formed from more than one kind of monomer.
MCQ
Which of the following are NOT examples of primary metabolites?
  • A. Glucose
  • B. Fructose
  • C. Alanine
  • D. Flavonoids
✅ Correct Answer: D
Flavonoids are secondary metabolites, not involved in basic metabolism.

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