Multiple choice

Grana are _____.

  1. found in the thylakoid lumen

  2. found in chloroplasts

  3. found in the thylakoid proteome

  4. found in thylakoid integral membrane proteins

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

A granum (plural grana) is a stack of thylakoid discs. Chloroplasts can have from 10 to 100 grana. Grana are connected by stroma thylakoids, also called intergrana thylakoids or lamellae.