(JUNE 2011) 18. A researcher has isolated a restriction endonuclease that cleaves at only one specific 10 base pair site. A) Would this enzyme be useful in protecting cells from […]
Tag: csir biochemistry
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CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Calculating Equilibrium Constant in Enzyme-Catalyzed Reaction with Rate Enhancement
The correct answer is (3) 10. Introduction Understanding the relationship between rate constants and equilibrium constants in enzyme-catalyzed reactions is critical in biochemistry. Enzymes accelerate reactions but do not alter their […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Calculating Equilibrium Constant in Enzyme-Catalyzed Reaction with Rate Enhancement
(NOV 2020-1) 15. The rate constant for conversion of a substrate into the product is 10-4 s-1, while the reverse rate constant 10-6 s-1. An enzyme enhance the rate of […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Common Misconceptions About Enzyme Properties: Clarifying Wrong Statements on Enzyme Catalysis
(DEC 2017) 14. From the following statements A. Enzymes enhance reaction rates by a factor of 2 to 10. B. The activation energy for a reaction is lowered by enzymes. […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Evidence of Enzyme-Substrate Complex Formation: Key Statements Explained for Life Science Students
(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 […]
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
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 […]
