Which is incorrect regarding glycogen?
Correct answer: B. It is a structural polysaccharide
- A. Glycogen is analogous to starch
- B. It is a structural polysaccharide
- C. It is a non-reducing sugar
- D. It gives a red color with iodine solution
Explanation
Glycogen is a storage polysaccharide found primarily in animals, stored in the liver and muscles. It is not a structural polysaccharide, which is a category that includes materials like cellulose in plants. Glycogen's role is similar to that of starch in plants, serving as an energy reserve. Glycogen is non-reducing, meaning it doesn't have a free aldehyde or ketone group to participate in redox reactions. Additionally, glycogen gives a red color when it reacts with iodine solution, which is a classic test for its presence.
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