MDCAT Biology MCQ #963

A scientist subjects keratin and hemoglobin to extreme pH levels. Which observation correctly contrasts the stability of these two proteins?

MDCAT Biology MCQ #963

  1. Question 1

    Q1. A scientist subjects keratin and hemoglobin to extreme pH levels. Which observation correctly contrasts the stability of these two proteins?

    • A) The fibrous protein is more stable against pH changes
    • B) The globular protein is less sensitive to temperature
    • C) The fibrous protein is more likely to be an enzyme
    • D) The globular protein is less soluble in salt solutions

    Answer: The fibrous protein is more stable against pH changes

    Explanation: Fibrous proteins are highly stable and resistant to denaturation. Globular proteins are very sensitive to pH and temperature changes.