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mitosis is the process by which one cell can divide to generate two genetically identical daughter cells. It allows a population of cells to increase in numbers. In mitosis the cell initially creates a copy ...

Receptors are specialised cells used to detect, stimuli or even convert stimulus in to an impulse. They are usually found in sense organs like the eye, which has light sensitive receptors known as retina, it...

Water evaporates from the cells and leaves the plant once the stomata open, This creates a suction which pulls more water into the leaf As water is cohesive due to hydrogen bonds, when one molecule moves oth...

A vaccine is a weakened or dead form of a virus that contains the antigen of that virus. An antigen is a protein on the surface of the virus that allows the body to identify it. Specific T helper cells from ...

Organisms do not adapt much over their lives, but in a large population there will be many different individuals. Some taller, some shorter, some may have a longer beak or a slightly different colour pattern...