Biochemistry MCQ on Enzymes: Properties and Functions

mcq on enzymes

Biochemistry MCQ – 16
(Biology / Life Sciences MCQ: Multiple Choice Questions in Biochemistry)

(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

MCQ Biology Lecture Notes

Welcome to Biochemistry MCQ-16

This question set on Biochemistry: Enzymes- Properties and Functions consists of 15 questions in MCQ format. Please select the correct answer and at the end test, you have to click on 'SUBMIT' button to see your Score and the Correct Answers. 

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1. Two students independently isolated lactate dehydrogenase from chicken heart and measured its activity as a function of substrate concentration, each determining Vmax and Km of their own preparation. They both got the same Km but different Vmax. One student said they had isolated different forms of the same enzyme, the other said they had isolated the same form. To resolve their argument they must:
2. Which of the following is commonly known as the Complex II of the electron transport system of mitochondria?
3. Which of the following is an example for a ribozyme?
4. Enzymes act by:
5. A competitive inhibitor of an enzyme
6. Multiple forms of enzymes with the same catalytic activity but with different structures are called:
7. Which of the following element plays an important role in nitrogen fixation?
8. The enzyme used for the synthesis of cDNA:

If the Km of an enzyme for substrate A is 1 x 10^-6 and for substrate B, is 4 x 10^-8 , it means

10. An organic substance bound to an enzyme and essential for its cavity is called:
11. Which enzyme is used in the estimation of glucose from the blood sample using biosensors?
12. Enzymes in an enzymatic reaction do not interfere with:
13. Enzymes accelerate the rate of a reaction by:
14. Thomas was purifying an enzyme from a homogenate of muscle cells. He went through seven steps of purification and fond that the enzyme activity was the same as the homogenate value. On the eight step, when the protein was highly pure, the enzyme activity rose to five times that of the homogenate value. Can you suggest a possible reason?
15. Which statement is NOT true about E. coli DNA ligase?

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Biology / Life Sciences MCQ: Biochemistry MCQ: (Multiple Choice Questions / Model Questions / Sample Questions in Biochemistry Enzymes with detailed answer key, explanations and references for preparing CSIR JRF NET Life Science Examination and also for other competitive examinations in Life Science / Biological Science such as ICMR JRF Entrance Exam, DBT BET JRF Exam, GATE (XL) Life Science Exam, GATE (BT) Biotechnology Exam, ICAR JRF Exam, University PG Entrance Exam, JAM Exam, GS Biology Exam, GRE, Medical Entrance Examination etc. This set of practice questions will help to build your confidence in Evolution to face the real examination.

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