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A reflex action is a way for the body to automatically and rapidly respond to a stimulus. It is able to work so fast because it bypasses the brain. The process is as follows:The stimulus (e.g Pressure, Te...
Asexual reproduction: only needs one parent and uses the process of mitosis to create identical copies (clones) of the parent cellSexual reproduction: two parents are needed in sexual reproduction and use...
An action potential (electrical impulse) arrives at a synapse (a gap between two neurones) which causes calcium voltage-dependent gates to open in the presynaptic neurone. An influx of calcium ions trigge...
The reflex arc is designed for quick, reactive movements that are instinctive. E.g. when we touch a hot pan, we need to react quickly otherwise our hand will get really badly burned. If the signal went fr...
Remember that DNA replication involves many enzymes in its process- and that you need to know their names and what they do!it is also useful to remember the mechanisms behind DNA replication, and how DNA ...
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