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Question
8.'Bile does not contain any enzyme but it is essential for digestion' Explain the statement .
9.(a)Name the substances that get reabsirbed by the tubules .
(b)How are the lungs designed in human beings to maximize the area for the exchange of gases ?
10.(a) What will happen if ...Mucus is not secreted by the gastric glands .
(b) What will happen if ....Leaves of plants are covered with vaseline .
8.'Bile does not contain any enzyme but it is essential for digestion' Explain the statement .
9.(a)Name the substances that get reabsirbed by the tubules .
(b)How are the lungs designed in human beings to maximize the area for the exchange of gases ?
10.(a) What will happen if ...Mucus is not secreted by the gastric glands .
(b) What will happen if ....Leaves of plants are covered with vaseline .
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Solution
8.Bile juice contains no digestive enzymes, yet it is important for digestion. ... Bile juice has bilepigments such as bilirubin andbiliverdin. These break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them. This process is known as emulsification of fats.
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