Multiple Choice
Which organelle is primarily responsible for producing ATP (energy) for the cell through cellular respiration?
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11. Aerobic Respiration
Mitochondria
Multiple Choice
In which type of cell would you typically find the highest number of mitochondria due to a high, continuous demand for ATP?
A
Adipocyte (fat cell)
B
Epidermal keratinocyte (skin cell)
C
Cardiac muscle cell (cardiomyocyte)
D
Mature red blood cell (erythrocyte)
Verified step by step guidance1
Understand the role of mitochondria: Mitochondria are the organelles responsible for producing ATP through cellular respiration, which is essential for energy-demanding processes in cells.
Identify cells with high energy demands: Cells that require continuous and large amounts of ATP will have more mitochondria to meet their energy needs.
Evaluate each cell type: Adipocytes store fat and have moderate energy needs; epidermal keratinocytes form the skin barrier and have lower energy demands; mature red blood cells lack mitochondria entirely as they rely on glycolysis; cardiac muscle cells contract continuously and require a constant supply of ATP.
Conclude that cardiac muscle cells have the highest number of mitochondria because they need a continuous and high supply of ATP to sustain heart contractions without fatigue.
Remember that the abundance of mitochondria correlates with the cell's metabolic activity and energy requirements, making cardiac muscle cells the prime example of cells rich in mitochondria.
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