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Botany - Biomolecules (B)

Practise 95 NEET previous year questions on Biomolecules (B), compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Biomolecules (B) has been asked in 23 of the 39 years of NEET papers analysed (1988–2026), with 95 questions in all. 55% of them were easy, 38% moderate and 7% tough. Most of its questions came from 2024, with 11 questions that year. In the last three years (2024–2026) it had 13 questions across 13 papers, about 1 per paper.

The chapter's 11 topics are not weighted equally: Enzymes (33 questions, 35%), Protein (14 questions, 15%), and Carbohydrates (12 questions, 13%) have been asked the most. Enzymes has also led over the last five years, with 10 questions. Protein has produced the most tough questions (3).

  1. 1Match List-I with List-II . List-I List-II A. Starch I. Fights infection B. Antibody II. Energy storage C. Concanavalin A III. Glucose trans2026 (Re-NEET)Amino Acids and Proteins
  2. 2Arrange the following elements in descending order of their contribution to percentage weight of the human body. (a) Oxygen (b) Carbon (c) H2026 (Re-NEET)Analysis of Chemical Composition
  3. 3Lecithin, a small molecular weight organic compound found in living tissues, is an example of:2024Lipids
  4. 4Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:2024Enzymes
  5. 5The cofactor of the enzyme carboxypeptidase is:2024Enzymes
  6. 6Match List-I with List-II Choose the correct answer from the options given below.2024Enzymes
  7. 7Regarding catalytic cycle of an enzyme action, select the correct sequential steps : A. Substrate enzyme complex formation. B. Free enzyme r2024Enzymes
  8. 8Which of the following is a nucleotide?2024 (Re-NEET)Nucleic Acid
  9. 9Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalyse2024 (Re-NEET)Enzymes
  10. 10Which of the following are not fatty acids? A. Glutamic acid B. Arachidonic acid C. Palmitic acid D. Lecithin E. Aspartic acid Choose the co2024 (Re-NEET)Lipids
  11. 11Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?2024 (Re-NEET)Enzymes
  12. 12Enzymes that catalyse the removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds, are known as :2024 (Re-NEET)Enzymes
  13. 13Match List-I with List-II. {array}{|l|l|l|l|} & List-I & & List-II \\ A. & Primary structure of protein & I. & Human haemoglobin \\ B. & Sec2024 (Re-NEET)Protein
  14. 14Cellulose does not form blue colour with Iodine because2023 (All India)Carbohydrates
  15. 15Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:2023 (All India)Enzymes
  16. 16Given below are two statements : Statement I : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature2023 (All India)Enzymes
  17. 17Given below are two statements: Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and 2023 (All India)Protein
  18. 18Match List-I with List-II. Choose the correct answer from the options given below :2023 (Manipur)Protein
  19. 19Inulin is a polymer of:2023 (Manipur)Carbohydrates
  20. 20Match List-I with List-II. Choose the correct answer from the options given below :2023 (Manipur)Primary and Secondary Metabolites
  21. 21Which of the following is not a secondary metabolite ?2023 (Manipur)Primary and Secondary Metabolites
  22. 22Read the following statements on lipids and find out the correct set of statements: (a) Lecithin found in the plasma membrane is a glycolipi2022 (Phase 1)Lipids
  23. 23A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C 6 H 12 O 6 then what is the formula f2022 (Phase 1)Carbohydrates
  24. 24Match List - I with List - II : \( {array}{|l|l|} { List - I } & { List - II } \\ { (a) Adenine } & { (i) Pigment MA } \\ { (b) Anthocyanin 2022 (Phase 2)Primary and Secondary Metabolites
  25. 25Primary proteins are also called as polypeptides because :2022 (Phase 2)Protein
  26. 26Given below are two statements: Statement I : Amino acids have a property of ionizable nature of and groups, hence have different structures2022 (Phase 2)Protein
  27. 27In the enzyme which catalyses the breakdown of: the prosthetic group is :2022 (Phase 2)Enzymes
  28. 28Which of the following are not secondary metabolites in plants?2021Chemical Nature of Protoplasm
  29. 29Match List - I with List- II. Column-I Column-II (a) Protein (i) C = C double bonds (b) Unsaturated fatty acid (ii) Phosphodiester bonds (c)2021Protein
  30. 30Identify the incorrect pair.2021Chemical Nature of Protoplasm
  31. 31Following are the statements with reference to lipids . (a) Lipids having only single bonds are called unsaturated fatty acids. (b) Lecithin2021Lipids
  32. 32Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their2020 (Phase 1)Chemical Nature of Protoplasm
  33. 33Identify the basic amino acid from the following.2020 (Phase 1)Protein
  34. 34Match the following (a) Inhibitor of catalytic activity (i) Ricin (b) Possess peptide bonds (ii) Malonate (c) Cell wall material in fungi (i2020 (Phase 1)Primary and Secondary Metabolites
  35. 35Identify the statement which is incorrect.2020 (Phase 2)Protein
  36. 36Match the following: (a) Aquaporin (i) Amide (b) Asparagine (ii) Polysaccharide (c) Abscisic acid (iii) Polypeptide (d) Chitin (iv) Caroteno2020 (Phase 2)Carbohydrates
  37. 37Concanavalin A is:2019 (All India)Chemical Nature of Protoplasm
  38. 38Consider the following statements: ( A ) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. ( B ) A c2019 (All India)Enzymes
  39. 39Which of the following organic compounds is the main constituent of lecithin?2019 (Odisha)Lipids
  40. 40Prosthetic groups differ from coenzymes in that2019 (Odisha)Enzymes
  41. 41The two functional groups characteristic of sugars are2018Carbohydrates
  42. 42Which of the following is not polymeric?2017Lipids
  43. 43Which one of the following statements is correct, with reference to enzymes?2017Enzymes
  44. 44Which one of the following statements is wrong?2016 (Phase 1)Protein
  45. 45It is much easier for a small animal to run uphill than for a large animal, because:2016 (Phase 1)Metabolism
  46. 46A typical fat molecule is made up of2016 (Phase 1)Lipids
  47. 47A non-proteinaceous enzyme is:2016 (Phase 2)Enzymes
  48. 48Which of the following is the least likely to be involved in stabilizing the three-dimensional folding of most proteins?2016 (Phase 2)Protein
  49. 49Which of the following describes the given graph2016 (Phase 2)Enzymes
  50. 50Which one of the following statements is incorrect?2015 (Phase 1)Enzymes

Frequently Asked Questions

1.How many questions are available for Biomolecules (B)?

This chapter includes 95 questions compiled from NEET papers spanning 2002 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Biomolecules (B) chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Biomolecules (B) an important chapter for NEET Botany?

Biomolecules (B) has appeared in 23 of the 25 years of NEET papers covered here, with 95 questions across 33 papers - about 3 per paper it appears in.

4.What is the difficulty level of Biomolecules (B) questions in NEET?

Of the 95 questions analysed for this chapter, 55% are easy, 38% moderate and 7% tough. 2024 had the most, with 11 questions.

5.Which topics in Biomolecules (B) should I focus on?

These topics have carried the most weightage in Biomolecules (B):

  • Enzymes - 33 questions (35%)
  • Protein - 14 questions (15%)
  • Carbohydrates - 12 questions (13%)
  • Protein has produced the most tough questions (3).
6.Is Biomolecules (B)'s weightage in NEET going up or down?

Across all 33 papers analysed, Biomolecules (B) has averaged about 2.9 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.