Search over 10,000 free study notes

At the axon terminal of a motor neurone, an action potential arrives and triggers an influx of calcium ions. These calcium ions cause vesicles containing Acetylcholine (a neurotransmitter that works on ch...

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration. This is done through a semi-permeable membrane. The aim is to have the same concentration of ...

Since the spirometer is a closed system, over time the oxygen concentration will decrease and therefore the oxygen concentration in the blood per inhalation will decrease. When the blood reaches the medul...

Phagocytes recognise and bind pathogens through chemical attraction and receptors. Phagocytes (white blood cells) engulf the pathogen so it is contained within the cell in a phagosome. Lysosome containing...

removing tips removes auxin so growth stopsauxin collects on the shaded sideauxin causes cell elongation on the shaded sideelongation on one side causes shoot to bend to the other sidethis is positive pho...