Question

Which class of terpenes includes \(\beta\)-carotene?

• A. Tetraterpenes
• B. Triterpenes
• C. Monoterpenes
• D. Sesquiterpenes

Hint:

Tetraterpenes consist of eight isoprene units and commonly include pigments like carotenoids.

Answer 1

The Correct Option is A

Step 1: Understand terpene classification.
Terpenes are classified based on the number of isoprene units \((\mathrm{C_5H_8})\) present in their structure.
Step 2: Analyze \(\beta\)-carotene.
\(\beta\)-carotene contains eight isoprene units, giving it the molecular formula \(\mathrm{C_{40}H_{56}}\).
Step 3: Identify the correct class.
Compounds with eight isoprene units are classified as tetraterpenes.
Step 4: Conclusion.
Therefore, \(\beta\)-carotene belongs to the class of tetraterpenes.