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Concentration of urine is controlled by the hormone ADH (anti-diuretic hormone)This hormone is released into the bloodstream; by the posterior pituitary glandIf the water concentration in the blood is too...
Curved surfaces, providing a large surface areaThin, providing a short diffusion distance
This phenomenon is called the 'jerk reflex' and is controlled by an electrical pathway along the nerves in your body. Once the hot object makes contact or comes close to the skin receptors will pick up th...
Donepezil is an inhibitor of the enzyme acetylcholinesterase. Acetylcholine is a neurotransmitter that diffuses across synapses, b...
Plants need three main nutrients to grow, which can be helpfully abbreviated as NPK: that's nitrates, phosphates and potassium. Many gardeners and farmers will apply these fertilisers to crops in order to...
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