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Biomolecules Questions

Practice 113 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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113
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52
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57
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4
Hard
Practice by Exam:Biology(55)Chemistry(46)Botany(4)BIOLOGY(3)Zoology(2)CHEMISTRY(1)General Awareness(1)General Knowledge and General Awareness(1)

About Biomolecules ā€” practice questions, PYQs & concepts

Biomolecules is a frequently-tested topic on Biology, Chemistry, Botany. ExamTest.live currently lists 113 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 ā€” every answer key is free, no sign-up required.

Biomolecules weight in competitive exams

Across our Biomolecules question bank, the largest sources are Biology (55), Chemistry (46), Botany (4), BIOLOGY (3) and Zoology (2). Click any exam chip above to drill down to that exam-specific question set.

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All Biomolecules Questions(1ā€“100 of 113)

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Q1mediummcqChemistryAIEEE2026
0% accuracy
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:
Q2easymcqChemistryAIEEE 20062026
0% accuracy
The pyrimidine bases present in are:
Q3mediummcqBiologyNEET 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.
Q4mediummcqBiologyNEET 20192026
0% accuracy
Which of the following glucose transporters is insulin-dependent?
Q5hardmcqBiologyNEET 20192026
0% accuracy
Concanavalin A is:
Q6easymcqChemistryNEET 20192026
0% accuracy
Among the following, the narrow spectrum antibiotic is:
Q7easymcqChemistryNEET 20192026
0% accuracy
The non-essential amino acid among the following is:
Q8mediummcqChemistryAIEEE 20072026
0% accuracy
The secondary structure of a protein refers to:
Q9mediummcqGeneral AwarenessSSC Selection Post 2021 Matriculation Level2026
0% accuracy
Honey is composed of water and two main types of sugars: __________ and glucose.
Q10easymcqBiologyNEET 20192026
0% accuracy
Purines found both in DNA and RNA are:
Q11easymcqBiologyNEET (UG) 20172026
0% accuracy
Which of the following are not polymeric?
Q12easymcqChemistryAIEEE 20062026
0% accuracy
The term anomers of glucose refers to:
Q13easymcqBiologyNEET (UG) 20172026
0% accuracy
Which one of the following statements is correct, with reference to enzymes?
Q14easymcqBIOLOGYNEET 20192026
Which of the following organic compounds is the main constituent of Lecithin?
Q15easymcqBIOLOGYNEET 20192026
Prosthetic groups differ from co-enzymes in that:
Q16easymcqCHEMISTRYNEET 20192026
Which structure(s) of proteins remain(s) intact during the denaturation process?
Q17mediummcqBiologyNEET 2020 E12026
Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
Q18mediummcqBiologyNEET 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 |
Q19easymcqBiologyNEET 2020 E12026
Which one of the following is the most abundant protein in the animals?
Q20easymcqChemistryNEET 2020 E12026
Which of the following is a basic amino acid?
Q21easymcqBiologyNEET 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 |
Q22hardmcqBiologyNEET 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:
Q23mediummcqBiologyNEET 20222026
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is then what is the formula for maltose?
Q24mediummcqBiologyNEET 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:
Q25mediummcqBotanyNEET 2024 R1@NUM: 1022026
Lecithin, a small molecular weight organic compound found in living tissues, is an example of:
Q26easymcqBiologyNEET 20212026
Identify the incorrect pair:
Q27mediummcqChemistryNEET (UG) 20242026
The reagents with which glucose does not react to give the corresponding tests/products are:A. Tollenā€™s reagentB. Schiffā€™s reagentC. D. E.
Q28mediummcqBotanyNEET 2024 R1@NUM: 1192026
Inhibition of succinic dehydrogenase enzyme by malonate is a classical example of:
Q29mediummcqBiologyNEET (UG) 20182026
The two functional groups characteristic of sugars are:
Q30easymcqChemistryNEET 2020 E12026
Sucrose on hydrolysis gives:
Q31easymcqBIOLOGYNEET 20192026
"Ramachandran plot" is used to confirm the structure of:
Q32easymcqBiologyAIEEE 20122026
Which one of the following statements is correct?
Q33mediummcqBiologyNEET 2020 E12026
Identify the basic amino acid from the following.
Q34mediummcqZoologyNEET 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.
Q35mediummcqGeneral Knowledge and General AwarenessCompetitive Exam2026
Which protein is found in grains?
Q36easymcqChemistryNEET 20212026
The deficiency is deficiency disease of:
Q37easymcqBiologyNEET 20212026
Which of the following are not secondary metabolites in plants?
Q38easymcqChemistryNEET 20222026
The incorrect statement regarding enzymes is:
Q39easymcqBiologyNEET 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 |
Q40easymcqChemistryNEET 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:
Q41mediummcqBiologyNEET 20232026
Cellulose does not form blue colour with Iodine because:
Q42easymcqChemistryAIEEE 20042026
Which base is present in RNA but not in DNA?
Q43mediummcqZoologyNEET 2024 R1@NUM: 1562026
Match List I with List II:
image
Q44mediummcqBiologyCompetitive Exams2026
What are ribosomes made up of?
Q45easymcqChemistryAIEEE 20122026
Which of the following compounds can be detected by Molischā€™s test?
Q46easymcqBotanyNEET 2024 R1@NUM: 1352026
The cofactor of the enzyme carboxypeptidase is:
Q47mediummcqChemistryJEE Main2026
Synthesis of each molecule of glucose in photosynthesis involves:
Q48mediummcqChemistryAIEEE2026
Biuret test is not given by:
Q49mediummcqChemistryFIITJEE AIEEE 2011 (Set Q)2026
The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
Q50mediummcqBotanyNEET 2024 R1@NUM: 1462026
Match List I with List II:
image
Q51mediummcqChemistryAIEEE 20092026
The two functional groups present in a typical carbohydrate are:
Q52easymcqBiologyNEET 20172026
Which one of the following statements is correct, with reference to enzymes?
Q53easymcqBiologyNEET 20172026
Which of the following are not polymeric?
Q54easymcqBiologyNEET 20172026
DNA fragments are:
Q55easymcqChemistryNEET (UG) 20182026
Which of the following compounds can form a zwitterion?
Q56mediummcqChemistryAIEEE2026
and are:
Q57mediummcqChemistryNEET (UG) 20182026
The difference between amylose and amylopectin is:
Q58easymcqChemistryAIEEE 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?
Q59mediummcqBiologyNEET (UG) 20182026
Select the correct match:
Q60mediummcqChemistryChemistry
3% 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:
Q61mediummcqChemistryChemistry
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:
Q62mediummcqChemistryChemistry
0% accuracy
Which one of the following statements is NOT true regarding (+)-Lactose?
Q63mediummcqBiologyBiology
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
Q64mediummcqBiologyBiology
0% accuracy
Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?
image
Q65mediummcqChemistryChemistry
Deficiency of vitamin causes the disease:
Q66easymcqChemistryChemistry
In DNA, the complimentary bases are:
Q67mediummcqChemistryChemistry
Which one of the following sets of monosaccharides forms sucrose?
Q68mediummcqBiologyBiology
Which one out of A ā€“ D given below correctly represents the structural formula of a basic amino acid?
image
Q69easymcqChemistryChemistry
Which one of the following is a peptide hormone?
Q70mediummcqChemistryChemistry
Which one of the following is an amine hormone?
Q71easymcqBiologyBiology
Which one is the most abundant protein in the animal world?
Q72mediummcqBiologyBiology
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 ā€œXā€:Structure: Ribose sugar + Base X.
image
Q73mediummcqBiologyBiology
Starch is useful as a storage material because it is:
Q74easymcqBiologyBiology
The transition state structure of the substrate formed during an enzymatic reaction is:
Q75easymcqChemistryChemistry
Assertion : Maltose is a reducing sugar which gives two moles of -glucose on hydrolysis.Reason : Maltose has a - -glycosidic linkage.
Q76mediummcqBiologyBiology
Which one of the following is not a constituent of cell membrane?
Q77mediummcqBiologyBiology
A phosphoglyceride is always made up of:
Q78easymcqBiologyBiology
The macromolecule chitin is a:
Q79easymcqChemistryChemistry
glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be:
image
Q80easymcqChemistryChemistry
The segment of which acts as the instrumental manual for the synthesis of the protein is:
Q81easymcqChemistryChemistry
Which of the following hormones is produced under conditions of stress and stimulates glycogenolysis in the liver?
Q82mediummcqBiologyBiology
Select the option which is not correct with respect to enzyme action:
Q83mediummcqBiologyBiology
Lysozyme that is present in perspiration, saliva and tears, destroys:
Q84easymcqChemistryChemistry
Which of the following hormones contains iodine?
Q85easymcqBiologyBiology
Which one of the following is a non-reducing carbohydrate?
Q86mediummcqBiologyBiology
Which of the following biomolecules does have a phosphodiester bond?
Q87mediummcqChemistryChemistry
Which one of the following does not exhibit the phenomenon of mutarotation?
Q88mediummcqBiologyBiology
The chitinous exoskeleton of arthropods is formed by the polymerisation of:
Q89mediummcqChemistryChemistry
In a protein molecule various amino acids are linked together by:
Q90mediummcqBiologyBiology
An organic substance bound to an enzyme and essential for its activity is called:
Q91mediummcqBiologyBiology
About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:
Q92mediummcqChemistryChemistry
Which statements about "Denaturation" are correct? Denaturation causes loss of secondary and tertiary structures. Denaturation leads to conversion of double strand to single strand. Denaturation affects primary structure.
Q93easymcqChemistryChemistry
The correct statement regarding RNA and DNA, respectively is:
Q94easymcqChemistryChemistry
Which one given below is a non-reducing sugar?
Q95mediummcqChemistryChemistry
Which of the following is NOT a fat soluble vitamin?
Q96easymcqBiologyBiology
The two polypeptides of human insulin are linked together by:
Q97mediummcqBiologyBiology
Which one of the following is a fat-soluble vitamin and its related deficiency disease?
Q98easymcqBiologyBiology
A typical fat molecule is made up of:
Q99easymcqBiologyBiology
Which one of the following statements is wrong?
Q100hardmcqChemistryChemistry
The correct corresponding order of names of four aldoses with configuration given below:
image
respectively, is:
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