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
Which type of human cell would be expected to have the highest abundance of mitochondria due to its high, continuous ATP demand?
A
Red blood cell (erythrocyte)
B
Cardiac muscle cell (cardiomyocyte)
C
Keratinized epidermal cell (stratum corneum)
D
Adipocyte (fat cell)
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 the energy demands of each cell type: Red blood cells lack mitochondria because they rely on glycolysis; keratinized epidermal cells are dead and have minimal metabolic activity; adipocytes store energy but do not have continuous high ATP demand.
Recognize that cardiac muscle cells (cardiomyocytes) contract continuously and require a constant, high supply of ATP to maintain heartbeats without fatigue.
Conclude that due to their continuous and high energy demand, cardiac muscle cells contain the highest abundance of mitochondria to meet their ATP needs.
Summarize that the abundance of mitochondria correlates with the cell's energy requirements, making cardiomyocytes the cell type with the most mitochondria among the options given.
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