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A leaky heart valve is called valve regurgitation and is caused by the valves not completely closing. Any valve in the heart can have a regurgitation whether that is the aortic, mitral, pulmonary or the t...
Blood glucose concentration is monitored and controlled by the pancreas (1 Mark)If blood glucose is too high then the Pancreas produces the hormone Insulin (1 Mark)From beta cells (1 Mark)This results in ...
Plants are adapted to survive dry conditions in the following ways: A decrease in surface area of the leaf, such as that found in the rolled-up leaf/spike in cactuses. This decreases the area from w...
Vaccines contain a safe form(weakened or small sample, a dead sample) of a disease causing micro-organism.The white blood cells produce the antibodies to destroy the invading pathogen.The memory cells can...
Insulin acts a key to open the way for glucose to enter cells (hepatocytes, muscles and brain cells)Hepatocytes absorbs more glucose from blood. Glucose converted to glycogen- for storage...
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