Chloroplasts are double membrane organelles with a smooth outer membrane and an inner membrane that is folded into disc-shaped sacs called the thylakoid. Thylakoids contain chlorophyll and other pigments (red, orange, yellow, brown) and are found in stacks called granum (grana, plural.)

This organelle is used to:
A. perform the process of cellular respiration.
B. expell O2.
C. create ATP.
D. covert solar energy into chemical energy.

D. convert solar energy into chemical energy.

Explanation:

Chloroplasts are the organelles that carry out photosynthesis. They contain chlorophyll, which traps light energy from sunlight to power chemical reactions that produce glucose.

The solar energy is converted into chemical energy, which is used to synthesise glucose, along with carbon dioxide and water. The reactions produce glucose and release oxygen as a byproduct.

The answer is C. heterozygous.

Let's take that A is a dominant allele of the gene, and that a is a recessive allele of the gene.
So, a mother is homozygous dominant (she has both alleles dominant). Let's express it as AA.
A father is homozygous recessive (he has both alleles recessive). Let's express it as aa.

The mother can give only dominant allele A, and the father can give only recessive allele a. So, their offspring can be only Aa (one allele dominant and one allele recessive):
Parents               AA      x        aa
Offspring      Aa      Aa     Aa       Aa