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Respiration uses 'food' in the form of glucose with oxygen to store (never create) energy in the form of ATP, along with CO2 and H2O. Photosynthesis uses energy from light with CO2 and H2O to create/store...

The heart is myogenic, meaning it initiates its own muscle contraction. At the Sinoatrial Node (SAN), found in the right atrium, an electrical impulse is generated that spreads across the atria, causing t...

The human body has evolved to be able to protect itself from it's external environment, especially preventing microbes entering the body, invading our cells and causing infectious diseases. Some of the co...

In person A, once the glucose enters the blood stream, the higher glucose level is detected by the beta cells of the islets of Langerhans in the pancreas. These cells respond by synthesising insulin and s...