MDCAT Biology MCQ #691

In a temperate lake during winter, aquatic life survives at the bottom while the surface is frozen. This is due to which anomalous property of water?

MDCAT Biology MCQ #691

  1. Question 1

    Q1. In a temperate lake during winter, aquatic life survives at the bottom while the surface is frozen. This is due to which anomalous property of water?

    • A) High specific heat capacity
    • B) High heat of vaporization
    • C) Maximum density at 4 degrees Celsius
    • D) High surface tension

    Answer: Maximum density at 4 degrees Celsius

    Explanation: Water is densest at 4°C, allowing ice to float and insulate the water below. High specific heat is tempting but refers to temperature stability.