Receptors in the hypothalamus detects the water content is too low. The coordinator in the brain receives the information and coordinates a response....

A gap between two neurones.

A neurone that carry information from the receptors to the CNS.

Contains receptor cells called rods and cones. These are sensitive to colour and light intensity.

Auxin diffuses to the dark/shaded side of plant. This causes the cells to grow faster on that side (elongate) which causes the shoot to bend twards th...

The outer wrinkly layer of the brain, controls consciousness, memory and language

FSH and LH are given to a woman to help eggs mature and release. Eggs are then collected from a woman's ovaries. The eggs are fertilised in a lab with...

The blood vessels supplying the skin dilate (widen). This helps to transfer energy to the environment.

Proteins (excess amino acids) cannot be stored by the body. Excess amino acids are converted to fats and carbohydrates. This occurs in the liver.

The hole in the centre where light enters

Most weeds growing in a field of crops or on a lawn are broad leaved, in contrast to grasses and cereals which are narrow leaves. Selective weedkiller...

Produces thyroxine which is involved in regulating metabolism.