Search over 10,000 free study notes

There are several factors affecting the rate and speed of an action potential: 1. Myelin sheath - This covers some of the nodes and acts as an electrical insulator where the action potential travels from one...

Mitosis is the cell division that produces 2 daughter cells with genetically identicle DNA to the parent cell. These are none as diploid cells. Meiosis requires two stages of cell division to produce 4 daugh...

The function of a blood clot is to prevent blood loss from damaged blood vessels. In order for a blood clot to form, activated platelets and the damaged tissue release clotting factors which are proteins in ...

As the action potenial reaches the synaptic terminal depolarisation causes voltage-gated Ca 2+ channels to open. The opening of these ion channels causes an influx of Ca 2+ ions because of the high concentra...

Cell wall: Only present in plant cells, it provides structure and is completely permeable to biological molecules. Cell membrane: Much thinner than cell wall and is present in all cells. It is selectively pe...