Question

Which one of the following is a polysaccharide?

• A. Glycogen
• B. Lactose
• C. Maltose
• D. Sucrose
• E. Glucose

Answer 1

The Correct Option is A

Glycogen is a polysaccharide, which is a long chain of glucose units linked by glycosidic bonds. It is the primary storage form of glucose in animals. The other options lactose, maltose, sucrose, and glucose are either disaccharides or monosaccharides, not polysaccharides.

The correct option is (A) : Glycogen

Answer 2

Let's define the different types of carbohydrates:

• Monosaccharide: A simple sugar (e.g., glucose, fructose).
• Disaccharide: Two monosaccharides linked together (e.g., sucrose, lactose, maltose).
• Polysaccharide: A complex carbohydrate made up of many monosaccharide units linked together (e.g., starch, cellulose, glycogen).

Now, let's analyze the given options:

• Glycogen: A polysaccharide made up of many glucose units. It is the storage form of glucose in animals.
• Lactose: A disaccharide made up of glucose and galactose.
• Maltose: A disaccharide made up of two glucose units.
• Sucrose: A disaccharide made up of glucose and fructose.
• Glucose: A monosaccharide.

Therefore, among the given options, only glycogen is a polysaccharide.

Therefore, the answer is Glycogen.