_ gives blue color with iodine.
Correct answer: D. Starches
- A. Glycogen
- B. Cellulose
- C. Dextrin
- D. Starches
Explanation
The iodine test is used to test the presence of starch. Starch turns its color to dark blue-black upon addition of aqueous solutions of the triodide anion, due to the formation of an intermolecular charge- transfer complex.
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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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