What do chloroplasts and mitochondria have in common?

• A. Both are found in animal cells
• B. Both have their own DNA
• C. Both are involved in photosynthesis
• D. Both produce glucose

Answer: (B)

Verified step by step guidance

1. Understand the roles of chloroplasts and mitochondria: Chloroplasts are involved in photosynthesis, converting light energy into chemical energy stored in glucose, while mitochondria are involved in cellular respiration, converting glucose into ATP, the energy currency of the cell.
2. Recognize that both chloroplasts and mitochondria are organelles found in eukaryotic cells, but chloroplasts are typically found in plant cells and some protists, whereas mitochondria are found in almost all eukaryotic cells, including both plant and animal cells.
3. Identify the unique feature of both organelles: Both chloroplasts and mitochondria contain their own DNA, which is separate from the nuclear DNA of the cell. This DNA is circular and resembles bacterial DNA, supporting the endosymbiotic theory.
4. Consider the implications of having their own DNA: This allows both organelles to replicate independently of the cell and produce some of their own proteins, which is a characteristic not shared by other organelles.
5. Conclude that the commonality between chloroplasts and mitochondria is their possession of their own DNA, which is a key feature that distinguishes them from other organelles in eukaryotic cells.