Notes

Metabolism:

Metabolism is the set of biochemical reactions that occur in living organisms to maintain life. These processes allow organisms to grow and reproduce, maintain their structures and respond to their environments. Biochemical reactions in living organisms are essentially energy transfers. During metabolism, chemicals are transformed from one form to the other by enzymes. Enzymes are crucial to metabolism because they act as biocatalysts and speed up and regulate metabolic pathways.

Anabolism:

Anabolism is the total series of chemical reactions involved in the synthesis of compounds.

Catabolism:

Catabolism is the series of chemical reactions that break down larger molecules. Energy is released in catabolism and some of it is utilized in anabolism. Products of catabolism can be reassembled by anabolic processes into new molecules. 

Activation Energy:

The minimum amount of energy required for effective collusion during a chemical reaction is called activation energy.

Significance of Activation Energy:

All chemical reactions require activation energy to break chemical bonds and begin the reaction. The need for activation energy acts as a barrier to the beginning of the reaction.

Reference of Activation Energy in Enzymes:

Enzymes lower such barriers by decreasing the requirement of activation energy of enzymes, reactions proceed at a faster rate Enzymes lower the activation energy in several ways. They do so by:

1. Altering the shape of the substrates and reducing the amount of energy required to complete the transition.
2. Disrupting the charge distribution.
3. Bringing substrate in the correct orientation to react.

Statement 1