Biotechnology
GATE BT topic:biochemistry PYQs
Build your understanding with focused practice from past exam papers.
How to practice topic:biochemistry
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–10 of 52. Imported answers require independent review unless marked reviewed.
Question 16
Open questionBTMCQ1 markNeeds review
Which of the following enzyme is involved in the protection of cells from reactive oxygen species?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 21
Open questionBTMCQ1 markNeeds review
The catalytic efficiency of an enzyme following Michaelis-Menten kinetics is defined by
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 23
Open questionBTMCQ1 markNeeds review
Match the carbohydrates in Column I with the correct glycosidic linkages involved in Column II.
Column I | Column II |
|---|---|
P. Amylose | 1. β (1→4) |
Q. Sucrose | 2. α (1→4) |
R. Amylopectin | 3. α1→β2 |
S. Cellulose | 4. α (1→4), α (1→6) |
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 25
Open questionBTMCQ1 markNeeds review
Which one of the following options represents the products of light reactions of photosynthesis in plants?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 28
Open questionBTMSQ1 markNeeds review
Which of the following drugs inhibit(s) ATP-ADP translocase?
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 32
Open questionBTNAT1 markNeeds review
You are characterizing a new enzyme isolated and purified in the laboratory. If the maximum velocity of the enzyme is 1800 μmoles L⁻¹ min⁻¹ and the total concentration of the enzyme in the reaction mixture is 1.5 μM, then the turnover number of the enzyme is _____ s⁻¹. (answer in integer)
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 35
Open questionBTNAT1 markNeeds review
You have purified an enzyme using a series of chromatographic methods. It was observed that a 10 μg mL⁻¹ of this purified enzyme converted 10 mM substrate per hour at 25°C and pH 7. Its specific activity is _____ IU μg⁻¹. (rounded off to three decimal places)
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 39
Open questionBTMCQ2 marksNeeds review
Match the biomolecules in Column I with their function given in Column II
Column I: P. Lectins; Q. P-glycoprotein; R. Digitoxigenin; S. Mannose 6-phosphate
Column II: 1. Acts as ATP dependent pump to efflux out small molecules; 2. Targets lysosomal enzymes to their destination; 3. Specific carbohydrate binding proteins; 4. Inhibits Na⁺-K⁺ pump
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 17
Open questionBTMCQ1 markNeeds review
Which one of the following coenzymes is utilised by alanine racemase for the conversion of L-Alanine to D-Alanine?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 18
Open questionBTMCQ1 markNeeds review
Correctly match the following Monosaccharides with their respective Epimers.
Monosaccharide | Epimer |
|---|---|
P. D-mannose | 1. C-3 epimer of D-glucose |
Q. D-allose | 2. C-4 epimer of D-glucose |
R. D-galactose | 3. C-4 epimer of D-mannose |
S. D-talose | 4. C-2 epimer of D-glucose |
| 5. C-5 epimer of D-glucose |
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer