Question

Chloroplast and mitochondria are both involved in energy conversion in cells. Select the other similarities they share. Choose ALL that apply.

A: Contain DNA
B: contain ribosomes
C: contain thylakoids
D: Found in ALL cells
E: surrounded by a double membrane

Answer 1

Chloroplasts and mitochondria are membrane-bound organelles only found in eukaryotic cells.

• The similarities between chloroplasts and mitochondria include:

1. both contain their own DNA (Option A)
2. both contain ribosomes (Option B)
3. they are surrounded by a double membrane (Option E)

• Mitochondria are found in all eukaryotic cells.

• Chloroplasts are only found in plant cells and some protists (e.g., algae).

• Both mitochondria and chloroplasts have ribosomes similar to bacterial ribosomes.

• Both mitochondria and chloroplasts have their own DNA that is independent of nuclear DNA.

• The thylakoids are membrane-bound compartments only found in chloroplasts.

In conclusion, both chloroplasts and mitochondria have their own DNA, ribosomes and they are surrounded by a double membrane (A, B, and E Options are correct).

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