Question

Chloroplasts are found only in eukaryotic cells that carry out photosynthesis: plants and algae. Plants and algae appear green as a result of the presence of chlorophyll. Where is chlorophyll located in the chloroplast?

(a) in the first, outer membrane
(b) in the space between the first and second membranes
(c) in the second, inner membrane
(d) in the third, innermost membrane

Answer 1

Chlorophyll is located in the thylakoid membranes of chloroplasts, which are the innermost membranes responsible for capturing light energy for photosynthesis.

Step-by-step explanation:

In chloroplasts, the green pigment chlorophyll is located in the thylakoid membranes. These structures are disc-shaped and are stacked into columns known as grana. The thylakoid membrane is actually the third, innermost membrane within the chloroplast, and it encloses an internal space called the thylakoid lumen. This is where chlorophyll captures the light energy necessary for photosynthesis, giving plants and algae their characteristic green color.