Multiple choice

Which structure has ribosomes attached to it?

  1. Lysosome

  2. Rough ER

  3. Nucleolus

  4. Smooth ER

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

The rough endoplasmic reticulum (rough ER) is named for its rough appearance, which is due to the numerous ribosomes attached to its outer membrane. The smooth ER lacks these ribosomes.