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Enzymes Questions

Practice 33 Enzymes questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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33
Total Questions
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17
Easy
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14
Medium
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2
Hard
Practice by Exam:Biology(24)Chemistry(3)BIOLOGY(3)Botany(2)Zoology(1)

About Enzymes — practice questions, PYQs & concepts

Enzymes is a frequently-tested topic on Biology, Chemistry, BIOLOGY. ExamTest.live currently lists 33 Enzymes 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.

Enzymes weight in competitive exams

Across our Enzymes question bank, the largest sources are Biology (24), Chemistry (3), BIOLOGY (3), Botany (2) and Zoology (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 17 easy Enzymes questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
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All Enzymes Questions(1–33 of 33)

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Q1easymcqBiologyNEET (UG) 20172026
0% accuracy
Which one of the following statements is correct, with reference to enzymes?
Q2mediummcqBiologyNEET 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.
Q3easymcqBiologyNEET 20232026
Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:
Q4easymcqBiologyNEET 20172026
Which one of the following statements is correct, with reference to enzymes?
Q5mediummcqBiologyNEET (UG) 20182026
Select the correct match:
Q6easymcqBIOLOGYNEET 20192026
An enzyme catalysing the removal of nucleotides from ends of DNA is:
Q7easymcqBIOLOGYNEET 20192026
Match the following enzymes with their functions:Column I: (a) Restriction endonuclease, (b) Exonuclease, (c) DNA ligase, (d) Tag polymeraseColumn II: (i) joins DNA fragments, (ii) extends primers, (iii) cuts DNA at specific position, (iv) removes nucleotides from ends
Q8easymcqBIOLOGYNEET 20192026
Prosthetic groups differ from co-enzymes in that:
Q9mediummcqBiologyNEET 2020 E12026
The enzyme enterokinase helps in conversion of:
Q10easymcqChemistryNEET 20222026
The incorrect statement regarding enzymes is:
Q11easymcqBiologyNEET 20232026
Given below are two statements:Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.In the light of the above statements, choose the correct answer:
Q12mediummcqBotanyNEET 2024 R1@NUM: 1192026
Inhibition of succinic dehydrogenase enzyme by malonate is a classical example of:
Q13easymcqBotanyNEET 2024 R1@NUM: 1352026
The cofactor of the enzyme carboxypeptidase is:
Q14mediummcqZoologyNEET 2024 R1@NUM: 1562026
Match List I with List II:
image
Q15easymcqChemistryAIEEE 20042026
Identify the correct statements regarding enzymes:
Q16mediummcqBiologyBiology
0% accuracy
Given below is a sample of a portion of DNA strand. What is so special shown in it?
Q17mediummcqBiologyBiology
0% accuracy
Which one of the following enzymes carries on the initial step in the digestion of milk in humans?
Q18mediummcqBiologyBiology
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
Q19easymcqBiologyBiology
A non-proteinaceous enzyme is:
Q20mediummcqBiologyBiology
Which of the following describes the given graph correctly?
image
Q21hardmcqBiologyBiology
The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green-gram-phosphatase. What does the graph indicate?
Q22easymcqBiologyBiology
The cutting of DNA at specific locations became possible with the discovery of:
Q23mediummcqBiologyBiology
Select the option which is not correct with respect to enzyme action:
Q24easymcqBiologyBiology
The transition state structure of the substrate formed during an enzymatic reaction is:
Q25easymcqBiologyBiology
Which one is a true statement regarding DNA polymerase used in PCR?
Q26easymcqBiologyBiology
A patient brought to a hospital with myocardial infarction is normally immediately given:
Q27mediummcqChemistryChemistry
Which one of the following statements is INCORRECT about enzyme catalysis?
Q28easymcqBiologyBiology
For its activity, carboxypeptidase requires:
Q29mediummcqBiologyBiology
Which one of the following pairs of food components in humans reaches the stomach totally undigested?
Q30mediummcqBiologyBiology
Which one of the following pairs is wrongly matched?
Q31hardmcqBiologyBiology
Which matching of site of action, substrate, enzyme and end product is correct?
Q32easymcqBiologyBiology
A competitive inhibitor of succinic dehydrogenase is:
Q33mediummcqBiologyBiology
Lysozyme that is present in perspiration, saliva and tears, destroys:

Frequently Asked Questions

How many Enzymes questions are on ExamTest.live?▼
We have 33 Enzymes questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
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Which exams include Enzymes questions?▼
Enzymes questions are commonly asked in Biology, Chemistry, BIOLOGY, Botany, Zoology. You can filter by exam using the links above.
How do I practice Enzymes questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.