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Biology Course Work 1 Topic: Effects of Exercise on Blood Sugar Level and Pulse Rate. Hypothesis: I hypothesize that during exercise the blood sugar level will rise and the pulse rate will increase. Background Knowledge: One of the most important metabolites in the blood is glucose. Its level must be controlled strictly. Glucose is the main respiratory substrate and must be supplied continuously to cells. The brain cells are especially dependant on glucose and are unable to use any other metabolites as an energy source. Lack of glucose results in fainting. The normal glucose level in the blood is 90 mg per 100 cm3 blood, but may vary from 70 mg per 100 cm3 blood during fasting up to 150 mg per 100 cm3 blood following a meal. During exercise, the rate of respiration will increase because the body has to break down more of sugar store in presence of oxygen...

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