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If lysosomes are the 'suicide bags' of the cell, which organelle is known as the 'powerhouse of the cell'?
Nucleus
Ribosome
Mitochondria
Golgi apparatus
Mitochondria
Mitochondria are known as the 'powerhouse of the cell' because they are the sites of aerobic respiration, where they produce the majority of a cell's supply of adenosine triphosphate (ATP). This molecule serves as the primary energy currency for various metabolic and physiological processes in living organisms.
Mitochondria are known as the 'powerhouse of the cell' because they are the sites of aerobic respiration, where they produce the majority of a cell's supply of adenosine triphosphate (ATP). This molecule serves as the primary energy currency for various metabolic and physiological processes in living organisms.
If the cell is a house, the mitochondria act as the power plant or electrical generator that converts raw fuel (food/glucose) into electricity (ATP) to power all household appliances.
Mitochondria = Mighty-chondria (they provide the might/energy).
C6тАЛH12тАЛO6тАЛ+6O2тАЛтЖТ6CO2тАЛ+6H2тАЛO+38ATP тАФ Overall summary of aerobic cellular respiration
The production of energy occurs via cellular respiration, specifically through the processes of the Krebs cycle (Citric Acid Cycle) and the electron transport chain located on the inner mitochondrial membrane (cristae). During these processes, glucose is oxidized to produce energy: C6тАЛH12тАЛO6тАЛ+6O2тАЛтЖТ6CO2тАЛ+6H2тАЛO+Energy┬а(ATP). The electrochemical gradient of protons across the inner membrane drives the enzyme ATP synthase to synthesize ATP from ADP and inorganic phosphate.
Mitochondria possess their own circular DNA and ribosomes, supporting the Endosymbiotic Theory.
The inner membrane is highly folded into structures called cristae to increase the surface area for ATP production.
Cells with high energy demands, such as muscle and nerve cells, contain a higher density of mitochondria.
Efficient energy production compared to anaerobic pathways.
Provides energy for active transport and protein synthesis.
Generation of reactive oxygen species (ROS) as a byproduct of metabolism.
Susceptible to mutations in mitochondrial DNA which can lead to metabolic disorders.
ATP synthesis in all eukaryotic cells.
Regulation of calcium ion storage and signaling.
Mitochondria are semiautonomous organelles.
Nucleus is the control center; Ribosome is the site of protein synthesis; Golgi apparatus is the packaging and distribution center.
C is correct тАФ Mitochondria function as the powerhouse of the cell by generating ATP through cellular respiration.
Always link cell organelle functions to their structure; for example, the high surface area of mitochondrial cristae is directly related to the high rate of energy production required by the body.