Column-I | Column-II | ||
a. | Catalyse the transfer of specific groups other than hydrogen from one substrate to other | (i) | Oxido- reductases |
b. | Catalyse the breakdown of larger molecules into smaller with addition of water |
(ii) | Lyases |
c. | Catalyse removal of groups from substrates by mechanism other than hydrolysis leaving double bonds |
(iii) | Transferases |
d. | Catalyse linking together of 2 compounds | (iv) | Ligases |
(v) | Hydrolases |
1. | Palmitic acid has 16 carbons including carboxyl carbon. |
2. | Lipids are not polymers but they are assembled from smaller molecules by dehydration. |
3. | Arachidonic acid has 20 carbon atoms including carboxyl carbon. |
4. | Lecithin is an example of phospholipid found in neural tissues but absent in cell membrane. |
1. | Oils generally have lower melting point than fats. |
2. | Percentage of total cellular mass of carbohydrates is higher than that of nucleic acids. |
3. | Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organism than in the earth’s crust. |
4. | Abrin and ricin are toxins. |
1. | Enzymes are denatured at high temperatures |
2. | Enzymes are mostly proteins but some are lipids also |
3. | Enzymes are highly specific. |
4. | Enzymes require optimum pH and temperature for maximum activity. |