DEFINITIONS AND KEY POINTS OF ENERGY AND ENZYME

  TERMS DEFINITIONS
Energy   The capacity, to do work is called energy.
Work   Work is the transfer of energy.
  Thermodynamics The study of energy is called thermodynamics
kilocalorie   A kilocalorie (Kcal) is the amount of heat necessary to raise 1 kg of water 1° C and is equal to 1,000 calories.
Calorie   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
Enzyme An enzyme is a biological catalyst that can accelerate a

 

 

  specific    chemical    reaction   by  lowering   the  activation

energy but remain unaltered in the process.

First law of thermodynamics It states that all objects in the universe tend to become more disordered and that the total amount of disorder in the universe is continually increasing.
Entropy


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The    measure of degree      of disorganization      is   called
Activation energy The minimum amount of free energy to start an activation reaction is called chemical energy.
Free energy The amount of excess energy is called free energy.
Catalysis The lowering of the activation of energy of a reaction is called catalysis.
Catalyst Any substance that performs catalysis is called a catalyst.
Cofactors The metal ions which are loosely attached with the enzymes are called cofactors.
Substrate level phosphorylation The synthesis of ATP during reaction of glycolysis and Krebs cycle is called substrate level phosphorylation.
Chemiosmosis The coupling reaction in which synthesis of ATP molecule takes during movement of W across an W gradient is called chemiosmosis.

 

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