Multiple choice

What is the compound embedded in animal cell membrane but not in plant cell membrane that makes the membrane impermeable to water-soluble substances?

  1. Cholesterol

  2. Phospholipid

  3. Glycoprotein

  4. Pore protein

  5. Channel protein

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cholesterol is an important constituent of cell membrane. It has a rigid ring system and a short branched hydrocarbon tail. It is largely hydrophobic. It is absent in prokaryotes. Cholesterol along with the phospholipids makes the membrane impermeable to water-soluble substances. It serves as a precursor for the biosynthesis of steroid hormones, bile acids, and vitamin D.