Question

Ome of the following statements are true for chloroplasts; others are true for mitochondria. Which statements are true for chloroplasts?

a)They are the sites of reactions that convert chemical energy from food molecules to ATP.
b)They are the sites of reactions that convert solar energy into chemical energy.
c)Their inner membrane has infoldings called cristae.
d)They contain the green pigment chlorophyll.
e)They have membranous sacs called thylakoids that are surrounded by a fluid called stroma.
f)Their matrix contains enzymes that function in cellular respiration.

Answer 1

Chloroplasts convert solar energy into chemical energy, contain chlorophyll, and have thylakoids surrounded by stroma; statements b), d), and e) are true for chloroplasts.

Step-by-step explanation:

The question relates to the structure and function of chloroplasts and requires identifying which statements are true for chloroplasts. Chloroplasts are the organelles in eukaryotic cells, such as plants and algae, where photosynthesis occurs.

• b) They are the sites of reactions that convert solar energy into chemical energy.
• d) They contain the green pigment chlorophyll.
• e) They have membranous sacs called thylakoids that are surrounded by a fluid called stroma.

Statement b) is correct because chloroplasts convert solar energy into chemical energy through the process of photosynthesis. Statement d) is true since chlorophyll is present in thylakoid membranes and is essential for harvesting light energy. Statement e) describes the thylakoids and stroma, which are key components of chloroplasts where the light-dependent and light-independent reactions of photosynthesis take place.