Which cell organelle is associated with generation of ATP?

Correct option is B

•     The mitochondria are the cell organelles primarily responsible for the generation of adenosine triphosphate (ATP), the main energy currency of the cell.
• Through processes such as the citric acid cycle and oxidative phosphorylation, mitochondria convert nutrients into ATP, providing energy for various cellular functions.

Explanation of Other Options:

• Lysosomes: Organelles containing digestive enzymes that break down waste materials and cellular debris. They are not involved in ATP production.
• Chloroplasts: Organelles found in plant and algal cells that conduct photosynthesis, converting light energy into chemical energy stored as glucose. While they produce ATP during the light-dependent reactions of photosynthesis, this ATP is primarily used within the chloroplast for synthesizing sugars and is not the main source of ATP for the cell's general energy needs.
• Endoplasmic Reticulum (ER): A network of membranes involved in protein and lipid synthesis. The ER is not directly involved in ATP production.