Which of the following is a naturally occurring polymer?
Correct answer: B. Cellulose
- A. Polystyrene
- B. Cellulose
- C. Nylon
- D. Teflon
Explanation
Cellulose is a natural condensation polymer of beta glucose and is the main structural material of plant cell walls, as are starch, proteins, natural rubber and DNA among natural polymers. Polystyrene, nylon and teflon are all synthetic. Recognising that natural polymers vastly outnumber synthetic ones in the living world is the point of the question.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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