Topics in Biology
- Analysing chemical composition
- Primary and secondary metabolites
- Biomacromolecules
- Proteins
- Polysaccharides
- Nucleic acids
- Structure of proteins
- Nature of bond linking monomers in a polymer
- Dynamic state of body constituents – concept of metabolism
- Metabolic basis for living
- The living state
- Enzymes
Elements present in non-living and living matter
| Element | W% in Earth’s crust | W% in Human body | Wh/We |
| Hydrogen (H) | 0.14 | 0.5 | 3.57 |
| Carbon (C) | 0.03 | 18.5 | 616.67 |
| Oxygen (O) | 46.6 | 65 | 1.39 |
| Nitrogen (N) | Trace | 3.3 | |
| Sulphur (S) | 0.03 | 0.3 | 10.00 |
| Sodium (Na) | 2.8 | 0.2 | 0.07 |
| Calcium (Ca) | 3.6 | 1.5 | 0.42 |
| Magnesium (Mg) | 2.1 | 0.1 | 0.05 |
| Silicon (Si) | 27.7 | Trace |
- Look at the elements C, N and Si.
- Humans have the highest ratio of Carbon compared to the Earths crust.
- Humans have no source of Nitrogen directly from the Earth.
- Though the Earth has plenty of Silicon humans do not have neglible amount of Si. Humans are born on the Earth but cannot possess silicon!!
Prepare your own notes and highlight important points. Do not make your notes with over crowded texts. Visualise the concepts. Draw neatly important diagrams using pencil. Then redraw using dark black pen. This leaves a strong imprint on your memory. Watch this video link given below. Prepare your own Cornell notes.