The three main purposes of metabolism are: –👇
(1) The conversion of food to energy to run cellular processes.
(2) The conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates.
(3) And the elimination of nitrogenous wastes.
About Metabolism -:👇
◆ These Enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments.
◆ The word metabolism can also refer to the sum of all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells.
◆The metabolic system of a particular organism determines which substances it will find nutritious and which poisonous.
some prokaryotes use hydrogen sulfide as a nutrient, yet this gas is poisonous to animals.
Metabolic reactions may be categorized as –👇
The breaking down of compounds (for example, the breaking down of glucose to pyruvate by cellular respiration);
The building up (synthesis) of compounds (such as proteins, carbohydrates, lipids, and nucleic acids).
◆Usually, catabolism releases energy,
◆anabolism consumes energy.