Where is ATP primarily generated in the cell?

• A. Chloroplasts
• B. Mitochondria
• C. Ribosomes
• D. Nucleus

Answer: (B)

Verified step by step guidance

1. Understand the role of ATP in the cell: ATP (adenosine triphosphate) is the primary energy currency of the cell, used to power various cellular processes.
2. Identify the organelle responsible for ATP production: The mitochondria are known as the 'powerhouses' of the cell because they are the primary site of ATP production through a process called cellular respiration.
3. Differentiate between the organelles listed: Chloroplasts are involved in photosynthesis in plant cells, ribosomes are responsible for protein synthesis, and the nucleus houses genetic material and controls cellular activities.
4. Recognize the process of ATP generation: In the mitochondria, ATP is produced during cellular respiration, which includes glycolysis, the citric acid cycle, and oxidative phosphorylation.
5. Conclude that mitochondria are the primary site of ATP generation in most eukaryotic cells, making them essential for energy production.