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Biology
Animal Nutrition Quiz 1
Topic 4 Quiz 1
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Category: Animal Nutrition Quiz 1
1) Which chemical change takes place in green plants, but not in mammals?
Animal cells do not have cellulose cell walls.
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2) Where does bile enter alimentary canal?
Bile produced by the liver is stored in gall bladder and enters in duodenum via bile duct.
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3) In the human body, where is bile produced?
Bile is produced in the liver and stored in gall bladder.
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4) Which is not a function of liver?
The liver plays an important part in the metabolism of the body. It is involve in the production of bile and formation of both glycogen and urea.
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5) What are the functions of colon?
The colon is responsible of absorption of water and mineral salts from undigested food resulting in formation of faeces.
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6) Which of the following breaks down fat molecule into fatty acids and glycerol?
fats are broken down to fatty acids and glycerol by lipase
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7) What is the final product of protein digestion?
proteins are broken down by trypsinl pepsin into peptones and peptons are further broken to amino acids by erepsin enzyme.
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8) Which part of alimentary canal is most acidic?
The stomach contains acidic gastric juices which is made up of mainly enzyme pepsin and dilute hydrochloric acid (pH 2)
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9) Which region of alimentary canal has the greatest surface area for absorption of food molecule?
The ileum is longest part of small intestine and is adapted for absorption of food molecules.
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10) Under which condition does amylase act on starch most quickly?
The rate of hydrolysis of starch into maltose by enzyme amylase is fastest at an optimum temperature of 30°C and on a neutral pH of 7.
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11) What are substrate and end products for action of enzyme lipase?
Substrate refers to the molecule which binds to the enzyme. Lipase acts on fats and break it down into the products(fatty acids and glycerol).
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