Multiple choice The membrane-bound compartment found inside the chloroplasts is A thylakoid Plasmid The nucleoid Magnetosome Reveal answer Fill a bubble to check yourself A Correct answer Explanation A thylakoid is a membrane-bound compartment inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen.