Which of the following gives blue color with iodine?
Correct answer: A. Starch
- A. Starch
- B. Cellulose
- C. Glycogen
- D. All of these
Explanation
Cellulose gives no color with iodine. Glycogen gives red color with iodine while starch gives blue color with iodine.
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About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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