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Biomolecules Questions

Practice 120 Biomolecules questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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120
Total Questions
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52
Easy
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64
Medium
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4
Hard
Practice by Exam:Biology(60)Chemistry(47)Botany(4)BIOLOGY(3)Zoology(2)General Science(1)General Awareness(1)General Knowledge and General Awareness(1)

About Biomolecules — practice questions, PYQs & concepts

Biomolecules is a frequently-tested topic on Biology, Chemistry, Botany. ExamTest.live currently lists 120 Biomolecules questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Biomolecules weight in competitive exams

Across our Biomolecules question bank, the largest sources are Biology (60), Chemistry (47), Botany (4), BIOLOGY (3) and Zoology (2). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 52 easy Biomolecules questions are available — build fluency before moving up.
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All Biomolecules Questions(1–100 of 120)

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Q1mediummcqBiologyCompetitive Exams2026
50% accuracy
What are ribosomes made up of?
Q2mediummcqChemistryAIEEE2026
0% accuracy
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:
Q3mediummcqChemistryAIEEE 20072026
0% accuracy
The secondary structure of a protein refers to:
Q4easymcqChemistryAIEEE 20062026
0% accuracy
The pyrimidine bases present in are:
Q5easymcqBiologyNEET (UG) 20172026
0% accuracy
Which of the following are not polymeric?
Q6mediummcqBiologyNEET 20192026
0% accuracy
Which of the following glucose transporters is insulin-dependent?
Q7easymcqBiologyNEET 20192026
0% accuracy
Purines found both in DNA and RNA are:
Q8easymcqChemistryNEET 20192026
0% accuracy
Among the following, the narrow spectrum antibiotic is:
Q9mediummcqGeneral AwarenessSSC Selection Post 2021 Matriculation Level2026
0% accuracy
Honey is composed of water and two main types of sugars: __________ and glucose.
Q10easymcqChemistryAIEEE 20062026
0% accuracy
The term anomers of glucose refers to:
Q11mediummcqBiologyNEET 20192026
0% accuracy
Consider the following statement:
(A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.
(B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.
Select the correct option.
Q12easymcqBiologyNEET (UG) 20172026
0% accuracy
Which one of the following statements is correct, with reference to enzymes?
Q13easymcqChemistryNEET 20192026
0% accuracy
The non-essential amino acid among the following is:
Q14hardmcqBiologyNEET 20192026
0% accuracy
Concanavalin A is:
Q15easymcqBiologyNEET 20212026
Match List-I with List-II:| List I | List II || :--- | :--- || (a) Protein | (i) double bonds || (b) Unsaturated fatty acid | (ii) Phosphodiester bonds || (c) Nucleic acid | (iii) Glycosidic bonds || (d) Polysaccharide | (iv) Peptide bonds |
Q16mediummcqZoologyNEET 2024 R1@NUM: 1562026
Match List I with List II:
image
Q17easymcqBIOLOGYNEET 20192026
Prosthetic groups differ from co-enzymes in that:
Q18easymcqChemistryNEET 2020 E12026
Sucrose on hydrolysis gives:
Q19easymcqBiologyNEET 20222026
Match list I with list II:| List I | List II || :--- | :--- || (a) Glycogen | (i) Hormone || (b) Globulin | (ii) Biocatalyst || (c) Steroids | (iii) Antibody || (d) Thrombin | (iv) Storage product |
Q20easymcqBiologyAIEEE 20122026
Which one of the following statements is correct?
Q21mediummcqBiologyNEET 2020 E12026
Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
Q22easymcqBiologyNEET 20212026
Identify the incorrect pair:
Q23mediummcqGeneral Knowledge and General AwarenessCompetitive Exam2026
Which protein is found in grains?
Q24mediummcqBiologyNEET 20222026
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is then what is the formula for maltose?
Q25mediummcqBiologyNEET 20232026
Given below are two statements:Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal).Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of type and two subunits of type).In the light of the above statements, choose the correct answer:
Q26mediummcqBiologyNEET 20232026
Cellulose does not form blue colour with Iodine because:
Q27mediummcqBiologyCompetitive Exam2026
The carbohydrate which cannot be digested by the human digestive system is:
Q28mediummcqGeneral ScienceCompetitive Exam2026
The food that gives more calories per unit mass of food is
Q29mediummcqZoologyNEET 2024 R1@NUM: 1982026
Regarding the catalytic cycle of an enzyme action, select the correct sequential steps:A. Substrate-enzyme complex formation.B. Free enzyme ready to bind with another substrate.C. Release of products.D. Chemical bonds of the substrate broken.E. Substrate binding to active site.
Q30mediummcqChemistryNEET (UG) 20182026
The difference between amylose and amylopectin is:
Q31mediummcqChemistryGeneral Knowledge Exam2026
Which of the following is not a reducing sugar?
Q32easymcqChemistryNEET 20222026
The incorrect statement regarding enzymes is:
Q33mediummcqChemistryNEET (UG) 20242026
The reagents with which glucose does not react to give the corresponding tests/products are:A. Tollen’s reagentB. Schiff’s reagentC. D. E.
Q34easymcqBIOLOGYNEET 20192026
"Ramachandran plot" is used to confirm the structure of:
Q35mediummcqBiologyGeneral Knowledge2026
Amino acids are building blocks of
Q36mediummcqBiologyNEET 2020 E12026
Match the following:
| Column - I | Column - II |
| :--- | :--- |
| (a) Inhibitor of catalytic activity | (i) Ricin |
| (b) Possess peptide bonds | (ii) Malonate |
| (c) Cell wall material in fungi | (iii) Chitin |
| (d) Secondary metabolite | (iv) Collagen |
Q37easymcqBIOLOGYNEET 20192026
Which of the following organic compounds is the main constituent of Lecithin?
Q38easymcqChemistryNEET 20212026
The deficiency is deficiency disease of:
Q39easymcqBiologyNEET 20212026
Which of the following are not secondary metabolites in plants?
Q40hardmcqBiologyNEET 20222026
Read the following statements on lipids and find out correct set of statements:(a) Lecithin found in the plasma membrane is a glycolipid(b) Saturated fatty acids possess one or more bonds(c) Gingelly oil has lower melting point, hence remains as oil in winter(d) Lipids are generally insoluble in water but soluble in some organic solvents(e) When fatty acid is esterified with glycerol, monoglycerides are formedChoose the correct answer from the options given below:
Q41easymcqBiologyNEET 2020 E12026
Which one of the following is the most abundant protein in the animals?
Q42easymcqChemistryNEET 20232026
Given below are two statements:Statement I: A unit formed by the attachment of a base to position of sugar is known as nucleoside.Statement II: When nucleoside is linked to phosphorous acid at -position of sugar moiety, we get nucleotide.In the light of the above statements, choose the correct answer:
Q43mediummcqBiologyGeneral Knowledge2026
Which of the following has the highest calorific value?
Q44mediummcqBotanyNEET 2024 R1@NUM: 1462026
Match List I with List II:
image
Q45mediummcqBotanyNEET 2024 R1@NUM: 1192026
Inhibition of succinic dehydrogenase enzyme by malonate is a classical example of:
Q46mediummcqChemistryJEE Main2026
Synthesis of each molecule of glucose in photosynthesis involves:
Q47easymcqBotanyNEET 2024 R1@NUM: 1352026
The cofactor of the enzyme carboxypeptidase is:
Q48easymcqCHEMISTRYNEET 20192026
Which structure(s) of proteins remain(s) intact during the denaturation process?
Q49mediummcqBiologyNEET 2020 E12026
Identify the basic amino acid from the following.
Q50easymcqChemistryAIEEE 20122026
Which of the following compounds can be detected by Molisch’s test?
Q51mediummcqChemistryAIEEE 20092026
The two functional groups present in a typical carbohydrate are:
Q52mediummcqBotanyNEET 2024 R1@NUM: 1022026
Lecithin, a small molecular weight organic compound found in living tissues, is an example of:
Q53mediummcqChemistryAIEEE2026
Biuret test is not given by:
Q54mediummcqChemistryAIEEE2026
and are:
Q55easymcqChemistryNEET 2020 E12026
Which of the following is a basic amino acid?
Q56mediummcqBiologyCompetitive Exam2026
Proteins are made up of _________.
Q57mediummcqChemistryFIITJEE AIEEE 2011 (Set Q)2026
The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
Q58easymcqBiologyNEET 20172026
Which one of the following statements is correct, with reference to enzymes?
Q59easymcqBiologyNEET 20172026
Which of the following are not polymeric?
Q60easymcqBiologyNEET 20172026
DNA fragments are:
Q61easymcqChemistryAIEEE 20042026
Which base is present in RNA but not in DNA?
Q62mediummcqBiologyNEET (UG) 20182026
The two functional groups characteristic of sugars are:
Q63mediummcqBiologyNEET (UG) 20182026
Select the correct match:
Q64mediummcqBiologyCompetitive Examination2026
The fermentation ability of Yeast is primarily due to the enzyme complex known as:
Q65easymcqChemistryAIEEE 20042026
Insulin production and its action in the human body are responsible for the level of diabetes. This compound belongs to which of the following categories?
Q66easymcqChemistryNEET (UG) 20182026
Which of the following compounds can form a zwitterion?
Q67mediummcqChemistryChemistry
2% accuracy
A sugar 'X' has the following properties:A. It is found in honey.B. It is a keto sugar.C. It exists in and - anomeric forms.D. It is laevorotatory.'X' is:
Q68mediummcqChemistryChemistry
0% accuracy
Match List I with List II:List I (Name of Vitamin)A. Vitamin B. Vitamin DC. Vitamin D. Vitamin List II (Deficiency disease)I. CheilosisII. ConvulsionsIII. RicketsIV. Pernicious anaemiaChoose the correct answer from the options given below:
Q69mediummcqChemistryChemistry
0% accuracy
Which one of the following statements is NOT true regarding (+)-Lactose?
Q70mediummcqBiologyBiology
0% accuracy
The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration). What do the two axes (x and y) represent?
image
Q71mediummcqBiologyBiology
0% accuracy
Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?
image
Q72mediummcqBiologyBiology
100% accuracy
Which one of the following is not a constituent of cell membrane?
Q73mediummcqBiologyBiology
0% accuracy
Lysozyme that is present in perspiration, saliva and tears, destroys:
Q74mediummcqBiologyBiology
0% accuracy
About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:
Q75mediummcqBiologyBiology
0% accuracy
Which one of the following is a fat-soluble vitamin and its related deficiency disease?
Q76mediummcqBiologyBiology
0% accuracy
Which one of the following vitamins is water-soluble?
Q77mediummcqBiologyBiology
0% accuracy
and are chiral molecules, their chirality is due to:
Q78mediummcqChemistryChemistry
Deficiency of vitamin causes the disease:
Q79easymcqChemistryChemistry
In DNA, the complimentary bases are:
Q80mediummcqChemistryChemistry
Which one of the following sets of monosaccharides forms sucrose?
Q81mediummcqBiologyBiology
Which one out of A – D given below correctly represents the structural formula of a basic amino acid?
image
Q82easymcqChemistryChemistry
Which one of the following is a peptide hormone?
Q83mediummcqChemistryChemistry
Which one of the following is an amine hormone?
Q84easymcqBiologyBiology
Which one is the most abundant protein in the animal world?
Q85mediummcqBiologyBiology
Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in living tissues. Identify the category and the blank component “X”:Structure: Ribose sugar + Base X.
image
Q86mediummcqBiologyBiology
Starch is useful as a storage material because it is:
Q87easymcqBiologyBiology
The transition state structure of the substrate formed during an enzymatic reaction is:
Q88easymcqChemistryChemistry
Assertion : Maltose is a reducing sugar which gives two moles of -glucose on hydrolysis.Reason : Maltose has a - -glycosidic linkage.
Q89mediummcqBiologyBiology
A phosphoglyceride is always made up of:
Q90easymcqBiologyBiology
The macromolecule chitin is a:
Q91easymcqChemistryChemistry
glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be:
image
Q92easymcqChemistryChemistry
The segment of which acts as the instrumental manual for the synthesis of the protein is:
Q93easymcqChemistryChemistry
Which of the following hormones is produced under conditions of stress and stimulates glycogenolysis in the liver?
Q94mediummcqBiologyBiology
Select the option which is not correct with respect to enzyme action:
Q95easymcqChemistryChemistry
Which of the following hormones contains iodine?
Q96easymcqBiologyBiology
Which one of the following is a non-reducing carbohydrate?
Q97mediummcqBiologyBiology
Which of the following biomolecules does have a phosphodiester bond?
Q98mediummcqChemistryChemistry
Which one of the following does not exhibit the phenomenon of mutarotation?
Q99mediummcqBiologyBiology
The chitinous exoskeleton of arthropods is formed by the polymerisation of:
Q100mediummcqBiologyBiology
An organic substance bound to an enzyme and essential for its activity is called:
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