Pure form of cellulose is:
Correct answer: A. Cotton
- A. Cotton
- B. Chitin
- C. Cellophane
- D. Paper
Explanation
The correct answer is cotton, as it is composed primarily of cellulose with minimal impurities, making it the closest to pure cellulose among the options. Chitin is a cellulose-like polysaccharide but differs chemically due to the presence of nitrogen. Cellophane is derived from cellulose but is chemically processed, which alters its original state. Paper contains cellulose but also includes other materials that make it less pure.
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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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