객관식
Do typical animal cells contain mitochondria, and what is the primary function of these organelles?
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11. Aerobic Respiration
Mitochondria
객관식
In humans, which cell type typically contains the greatest number of mitochondria due to exceptionally high ATP demand for continuous contraction?
A
Adipocyte (fat cell)
B
Red blood cell (erythrocyte)
C
Cardiac muscle cell (cardiomyocyte)
D
Skin keratinocyte
검증된 단계별 안내1
Understand the role of mitochondria: Mitochondria are the organelles responsible for producing ATP, the energy currency of the cell, through cellular respiration.
Consider the energy demands of each cell type: Cells that require continuous and high amounts of energy will have more mitochondria to meet their ATP needs.
Analyze each option: Adipocytes store fat and have moderate energy needs; red blood cells lack mitochondria entirely because they rely on anaerobic metabolism; skin keratinocytes have moderate energy demands for maintenance and repair.
Recognize that cardiac muscle cells (cardiomyocytes) contract continuously and require a constant, high supply of ATP to sustain heartbeats without fatigue.
Conclude that cardiac muscle cells contain the greatest number of mitochondria to fulfill their exceptionally high ATP demand for continuous contraction.
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