Select ALL correct statements about chloroplasts.

(1) They contain chlorophyll and carotenoids

(2) They are found in plant cells and other photosynthetic organisms

(3) Their internal membranes are organized into grana and lamellae

(4) They are generally larger than mitochondria

Explanation

Correct statements about chloroplasts:

• Contain both chlorophyll and carotenoids
• Found in plant cells and other photosynthetic eukaryotes (e.g., algae) — not in animal cells
• Internal membranes organized into grana (stacks) connected by stroma lamellae
• Generally larger than mitochondria

The stroma is the site of the Calvin cycle (carbon fixation), not the light reactions. The light reactions occur in the grana.