Multiple choice

RER looks rough under microscope because of the presence of

  1. fat molecules

  2. carbohydrates

  3. lipids

  4. ribosomes

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

Rough Endoplasmic Reticulum (RER) appears rough under the microscope because ribosomes are attached to its outer surface. Ribosomes are the protein-synthesizing machinery that give RER its characteristic textured appearance.