
Concept explainers
Which of the following is False?
a. Carbohydrates are the major energy storage molecule of plants.
b. Carbohydrates are the major source of rapidly available energy stores in people.
c. Carbohydrates include cellulose.
d. Carbohydrates are hydrophobic and don't retain water in the body.

Introduction:
Carbohydrates come in the simple forms like sugars and in complex forms such as starches and fibers. It can also be defined as neutral compounds of carbon, hydrogen, and oxygen.
Answer to Problem 1MC
Correct answer:
Carbohydrates are hydrophilic and they contain multiple hydroxyl groups which can form hydrogen bonds with water molecules. Therefore, option (d) is correct.
Option (d) is given as “Carbohydrates are hydrophobic and don’t retain water in the body”.
Explanation of Solution
Justify reasons for the correct statement:
All carbohydrates composed of carbon, hydrogen, and oxygen. These molecules come together in different arrangements to form single or double units called as sugars, and longer units called as starches or fibers. Carbohydrates are hydrophilic compounds.
Hence, option (d) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “carbohydrates are the major energy storage molecule of plants”.
Polysaccharides molecules are the most abundant carbohydrates; they can contain thousands of glucose units. As the above mentioned statement is true, hence, it is a wrong answer.
Option (b) is given as “carbohydrates are the major sources of rapidly available energy stores in people”.
Most of the organism use carbohydrates as energy source. It can be metabolized and provide energy. Monosaccharides like glucose and disaccharides like sucrose and fructose are absorbed from the intestine and are immediately metabolized to produce energy. As the above mentioned statement is true, hence, it is a wrong answer.
Option (c) is given as “carbohydrates include cellulose”.
Cellulose is the polymer of glucose and it is the most abundant polysaccharide on the Earth. It provides mechanical support to the plant structures. As the above mentioned statement is true, hence, it is a wrong answer
Hence, options (a), (b), and (c) are incorrect.
Carbohydrates are hydrophilic in nature and they retain water in the body.
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Chapter 35 Solutions
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