1. Ans: The reactions in which net release of energy take place is called exergonic reaction. Question 44. 1. (a) It is a DNA sequencing technique. (b) 8. Polymerase used for PCR is extracted from _____________ . DEFINITIONS AND KEY POINTS OF ENERGY AND ENZYME, Answer of Question of Reproduction & Development, DEFINITIONS AND KEY POINTS FOR OBJECTIVES. Ans: The capacity to do work is called energy. The two half-reactions are combined to make a balanced redox equation. Question 1. MCQ Questions for Class 12 Chemistry with Answers were prepared based on the latest exam pattern. (b) 2. __________are non protein, organic molecules That participate in enzyme-catalyzed reactions. Sol:(c) It is a DNA amplification technique. 3. Answer/ Explanation. •. The polymer chain reaction is used for_________. 2. The amount of excess energy is called free energy. The electric current that lights a bulb. What is the oxidation number of Xe in this compound? Sol: (b) Single-stranded DNA oligonucleotide. In coil spring type of clutch the cover is separated by a. Give correct statement if false, Your email address will not be published. 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One mole of N2H4 loses 10 moles of electrons to form a new compound y. At what temperature does denaturation of DNA double helix takes place? The PCR technique was developed by_____. (b) 5. Ans: A calorie (c) is the amount of heat it takes to raise the temperature of 1 g (1 cc) of water 1°C from 14.5 to 15.5°C. 3. Which of the following is not a conjugating agent? Ans: The coupling reaction in which synthesis of ATP, molecule takes during movement of H+ across an H+ gradient is called chemiosmosis. The bonds are too weak to hold the protein in proper position .above 30° C. Any substance that performs catalysis is called an inhibitor. 2. The study of energy is called________________, The commonly used unit for, measuring heat in an animal is the________________, The measure of degree of disorganization is called___________. Ans: The metal ions which are loosely attached with the enzymes are called cofactors. Which of the following is true for asymmetric PCR? 6. Ans: The minimum amount of free energy to start a chemical reaction is called chemical energy. (iii) A coupling reaction : Arene diazonium salts react with highly reactive aromatic compounds such as phenols and amines to form brightly coloured azo compounds. What is the process of binding of primer to the denatured strand called? Complete the following reaction equations: (All India 2009) Answer: Reduction reaction. Ans: The amount of reactant substance converted to product substance in a given period of time is called reaction rate. It changes the shape of enzyme.This phenomenon is called __________, the metal ions which are loosely attached with the enzymes are called__________. Aldehydes, Ketones and Carboxylic Acids Class 12 MCQs Questions with Answers. Which of the following statements are true regarding PCR? The stored energy is called potential energy. This reaction is known as coupling reaction. Why are vent polymerase and Pfu more efficient than the Taq polymerase? Ans: The lowering of the activation of energy of a reaction is called catalysis. CLASS CHILOPODA (CENTIPEDES) (ehenos, lip + podus, foot), Phylum Porifera – Characteristics , Types , Functions & Reproduction. The substrate binds with the enzyme. 6. 13. MCQs on PCR. 9. T : Any substance that performs catalysis is called an inhibitor, F: Any substance that performs catalysis is called a catalyst. The half-reaction method of balancing redox reactions emphasizes the fact that redox reactions can be separated into an oxidation half-reaction, which shows only the oxidation process and a reduction half-reactions which shows the reduction process. 4. 14. Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because. The minimum amount of free energy to start a chemical reaction is called______________ energy. Your email address will not be published. T : The capacity to do work is called energy. Ans: The substrate binds with the enzyme. (b) It is a DNA degradation technique (c) It is a DNA amplification technique (d) All of the above . Which reaction involves neither oxidation nor reduction? 5. The product contains more energy than the reactants. 7. 2. 17. The pull of a magnet. It has following forms: The heat from a furnace. Coupling d. Driven member Ans : D. The purpose of the fluid coupling is to act as a a. Thermus aquatics is the source of _________. Any substance that performs catalysis is called an inhibitor. Q.2- The hydroxylated products of phase-1 are converted to soluble metabolites by coupling with polar agents in phase -2 of detoxification reactions by a process called Conjugation. Ans: It states that energy can neither be created nor destroyed, it can only be transformed from one form to another.

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