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After a meal blood sugar levels will rise. In the Islets of Langerhans beta cells detect hyperglycaemia and secrete insulin, while alpha cells stop releasing glucagon.
The insulin moves in the blood...

Alveoli are microscopic air sacs in the lungs. During inspiration (breathing in), oxygen diffuses from the air in the alveoli into the blood. At the same time, carbon dioxide carried in the blood diffuses...

Ultrafiltration in the Bowman's capsule- happens due to high pressure created by the difference in diameter of the Afferent and Efferent arterioles. Glucose now in filtrate and not blood.Glucose then trav...

Conversion of answering gas into Nigerian containing compounds. Lightning can cause this, but there are also two types of bacteria which perform this role:
1) Mutualistic N-fixing bacteria: live in n...

Always start with planning. Even if there is little time, mind map briefly as many points that you could talk about. Ideally you need to write about at least five.Always start the essay with a brief intro...