(a) Explain why an athlete in a race would be given a glucose drink rather than a piece of bread.
(b) Outline the test for starch in a given food substance.
(c) State five reasons why water is important in human diet.
(a)Why an athlete should be given glucose drink: Glucose is the simplest form of carbohydrates/soluble form of carbohydrate; an energy-giving food substance which does not require any form of digestion. - hence it is absorbed in the ileum/small intestine. - where it diffuses/enters into the blood stream/circulatory system. - it is then assimilated; and oxidized. - within the shortest time/quickly/immediately. - to give energy to the athlete. - bread is a complex carbohydrate/polysaccharide/starch. - which will require a series of digestive processes/hydrolysis. - which starts in the mouth; and ends in small intestine/ileum. - this takes a longer time to produce energy for use/cannot give immediate energy.
(b) Test for starch: -
(c) Importance of water in human diet: -
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