Biology Revision

4. It is the ability to distinguish between two separate points.
5. A point where all of the enzyme’s active sites are occupied with substrate molecules, so the addition of more substrate molecules will have no effect on the rate of reaction.
8. What does the Michaelis–Menten constant measure at ½Vmax.
9. It is a discrete structure within a cell, having a specific function.
10. It is the minimum energy required for substances to react.
11. Name the process where an ester is formed from the condensation of one molecule of glycerol and three molecules of fatty acid.
12. Lysosymes contain this type of enzymes for destroying worn-out parts of cell and food particles.
13. Plants polymerise α-glucose to make two forms of starch: amylose and _____.
14. Name the fourth level of organisational structure of polypeptides.

1. This type of biological molecule is polar, dissolves easily in water and taste sweet.
2. It is the number of times larger an image is compared with the real size of the object.
3. These bonds are the strongest in maintaining the protein structure.
4. It is the site for ribosomes and can function to transport protein to golgi body.
6. Hydrogen bonds make water molecules ‘sticky’. What is this stickiness called?
7. Certain substances present in cells (and some which enter from the environment) may react with an enzyme, altering the rate of reaction.