(NOV 2020-1) 13. The following statements were made of suggest the existence of an enzyme-substrate complex. A. at constant concentration of enzyme, the reaction increase with rate increase with increasing […]
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CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Protease, Protein, Nuclease, and Nucleic Acid Stability at 37°C: What Remains Intact After Incubation?
(DEC 2002) 12. When a mixture of protease, protein, nuclease and nucleic acid are incubated at 37OC, at the end of one hour which will remain intact (1) Nucleic acid […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Reaction Order of Enzyme-Catalyzed Reactions at Low Substrate Concentration: A Detailed Analysis
(JUNE 2007) 11. The order of reaction catalyzed by enzyme at low substrate concentration is (1) first order (2) Pseudo first order (3) Second order (4) Zero order The correct […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Equilibrium Rate Constant Calculation: Understanding Rate Constants in Chemical Reactions
10. Consider the following chemical reaction in which forward rate constant (K1) is 1/sec and backward rate constant is 107/sec What will equilibrium rate constant? (1) 1 (2) 107 (3) […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Understanding Protein Structure and Function: Identifying Enzymes from Amino Acid Composition and Secondary Structure
(JUNE 2014) 9. A protein is composed of leucine, isoleucine, alanine, glycine, proline, one lysine, one arginine and two cysteines connected by a disulfide bond. Conformational analysis indicates that the […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
How Enzymes Lower Activation Energy: Mechanisms of Catalysis Explained
(DEC 2013) 8. Enzymes help to lower the activation energies of reactions by (1) covalent interaction with substrates. (2) binding only with the solvent molecules, (3) changing reaction equilibria. (4) […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Properties of Enzymes: Understanding What Enzymes Can and Cannot Do in Catalysis
7.Which of the following is NOT a property of an enzyme (1) from complex with substrate (2) decrease activation energy (3) decrease Gibb’s free energy (4) Increases rate of reaction […]
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Properties of Enzymes: Understanding What Enzymes Can and Cannot Do in Catalysis
6. Which of the following is NOT a property of an enzyme (1) from complex with substrate (2) decrease activation energy (3) decrease Gibb’s free energy (4) Increases rate of […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Understanding Enzyme-Substrate Interactions: Mechanisms, Models, and Catalytic Processes
6. Enzymes do not interfere with (1) Path of reaction (2) Rate of reaction (3) Activation energy (4) Reaction equilibrium The correct answer is (4) Reaction equilibrium. Enzymes accelerate the rate […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Do Enzymes Affect Chemical Equilibrium? Understanding Enzyme Action in Catalysis
The correct answer is (1) disturbing the equilibrium of the chemical reaction. Enzymes are biological catalysts—they speed up reactions and alter the pathway (lower activation energy), but do not change the reaction’s […]
