ATP is broken down giving rise to a fixed amount of energy that can drive the endothermic reactions taking place in which cell organelle of a cell?

The Correct answer is Mitochondria.

Key Points

• Mitochondria are known as the powerhouses of the cell because they are the site of ATP production, which is the energy currency of the cell.
• ATP (Adenosine Triphosphate) is synthesized through cellular respiration, primarily in the mitochondria, using energy derived from the breakdown of glucose or other nutrients.
• The process of ATP production occurs through oxidative phosphorylation in the inner mitochondrial membrane, where the electron transport chain is located.
• Mitochondria are double-membrane organelles, with the inner membrane folded into structures called cristae, which increase surface area for energy production.
• The mitochondria are responsible for driving endothermic reactions within the cell by providing the necessary energy through ATP hydrolysis.
• These organelles are found in most eukaryotic cells and play a crucial role in energy metabolism, as well as other functions such as regulation of the cell cycle and apoptosis.

 Additional Information

• Ribosome
  • Ribosomes are the sites of protein synthesis in the cell.
  • They are composed of ribosomal RNA (rRNA) and proteins and are found either floating freely in the cytoplasm or attached to the endoplasmic reticulum (forming rough ER).
  • Ribosomes are not directly involved in energy production but play a critical role in translating genetic information into functional proteins.
• Lysosome
  • Lysosomes are membrane-bound organelles containing digestive enzymes that break down waste materials and cellular debris.
  • They are primarily involved in the degradation and recycling of cellular components and are not directly related to ATP synthesis.
  • Lysosomes are known as the "suicidal bags" of the cell because they can initiate autophagy or programmed cell death under certain conditions.
• Chloroplast
  • Chloroplasts are found in plant cells and are the sites of photosynthesis, where light energy is converted into chemical energy stored in glucose.
  • While chloroplasts are involved in energy production, they do not produce ATP for cellular processes but instead synthesize glucose, which can be metabolized by mitochondria to generate ATP.
  • Chloroplasts contain the pigment chlorophyll, which captures sunlight, and are unique to plant and algal cells.