OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chitin is a polysaccharide similar to cellulose, except that one hydroxyl group is replaced with a nitrogen group. In its natural state, chitin is strong but pliable. When paired with calcium carbonate, however, it becomes very strong and inflexible. Which of the following statements must also be true concerning chitin?
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It is composed of glucose.
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It is double stranded.
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It can be denatured at high temperatures.
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It is liquid at room temperature.
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Explanation:
Detailed explanation-1: -Chitin is formed by a series of glycosidic bonds between substituted glucose molecules. Chitin is different from cellulose because of the substitution that occurs on the glucose molecule. Instead of a hydroxyl group (OH), the glucose molecules in chitin have an amyl group attached that consists of carbon and nitrogen.
Detailed explanation-2: -Because of the presence of many hydrogen bonding sites, namely, methyl hydroxyl, and the acetyl amide, carbonyl and hydroxyl groups, chitin is more able than cellulose of forming strong hydrogen bonds [20, 26].
There is 1 question to complete.