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A receptor detects a stimulus and generates electrical signals which are conducted by the neurones in the reflex arc. Firstly, the sensory neurone conducts the signal to the spinal cord. There is then a s...
The human circulatory system has dual / double system which means that it has higher blood pressure and a greater flow of blood to the tissues. The heart is made of specialised (cardiac) muscle cells whic...
Really simply, they are the chromosomes which decide whether you’re a boy or a girl. In total we have 46 chromosomes so 23 pairs which sequence everything about us- from the colour of our eyes to the how ...
This question can be broken down. Sewage contains organic matter which can be broken down, and bacteria need nutrients which they can get from digesting organic matter. Any form of digestion with aerobic ...
Respiration occurs within the mitochondria, an organelle in all our living cells. Aerobic respiration occurs when there is sufficient oxygen for the body to completely breakdown glucose into carbon dioxid...
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