Question Detail
Question
Tails can be __________ (straight) or unsaturated (with kinks from cis-double bonds).
Correct Answer
Option A is the correct answer.
Detailed Explanation
Saturated fatty acid tails have no double bonds, allowing tight packing. Unsaturated tails have kinks that increase membrane fluidity.
Hint
The type of fat that is solid at room temperature, with no double bonds.