Question

Microbial plastics are made from:

• A. polyhydroxyalkanoates
• B. polystyrene
• C. polyurethane
• D. polyvinyl chloride

Hint:

Remember: PHAs are the true microbial plastics; PHB (polyhydroxybutyrate) is the most common example.

Answer 1

The Correct Option is A

Microbes, especially bacteria like Ralstonia eutropha, synthesize and accumulate biodegradable polymers such as polyhydroxyalkanoates (PHAs).
These PHAs can be processed into plastics with properties similar to conventional petroleum-derived plastics, but they are biodegradable and eco-friendly.
Other options (polystyrene, polyurethane, PVC) are synthetic petroleum-based plastics, not microbial in origin.
\fbox{Hence, microbial plastics are made from polyhydroxyalkanoates (PHAs).}