The living matter is composed of mainly six elements: carbon, hydrogen, oxygen, nitrogen, phosphorus and sulphur. These elements together constitute about 90% of the dry weight of the human body.
- Chemicals or molecules present in the living organisms are known as biomolecules.
- Depending upon their weight and solubility biomolecules fall into two categories: micromolecules and macromolecules.
- Micromolecules may be inorganic or organic and include water, gases, minerals, sugars, amino acids, and nucleotides.
- Macromolecules generally belong to four classes of organic compounds: carbohydrates, lipids, proteins and nucleic acids.
- They are the four biomolecules that forms the basis of life
Biomolecules | Major Functions |
| 1. Polysaccharide (Glycogen) | Storage form of energy to meet short term demands. |
| 2. Protein | Fundamental basis of structure and function of cell. |
| 3. Lipids | Storage form of energy to meet long term demands, structural components of membranes. |
| 4. DNA (Deoxyribonucleic acid) | Repository of hereditary information. |
| 5. RNA ( Ribonucleic acid) | Essentially required for protein biosynthesis. |
nice
ReplyDeletenice
ReplyDelete