MDCAT Biology MCQ #744

Vegetable oils are liquid at room temperature while animal fats are solid. What structural mechanism explains the lower melting point of vegetable oils?

MDCAT Biology MCQ #744

  1. Question 1

    Q1. Vegetable oils are liquid at room temperature while animal fats are solid. What structural mechanism explains the lower melting point of vegetable oils?

    • A) Kinks caused by double bonds
    • B) Increased number of hydrogen atoms
    • C) Longer carbon chain lengths
    • D) Stronger van der Waals forces

    Answer: Kinks caused by double bonds

    Explanation: Double bonds in unsaturated fatty acids create kinks that prevent tight packing, lowering the melting point. Saturated fats pack tightly and are solid.