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What is the primary function of the 'Mitochondria' in a cell?
Protein synthesis
Production of ATP
Storage of genetic material
Digestion of waste
Production of ATP
Mitochondria are double-membrane bound organelles known as the 'powerhouse of the cell'. Their primary function is to perform cellular respiration to generate adenosine triphosphate (ATP), the primary energy currency of biological cells.
Mitochondria are double-membrane bound organelles known as the 'powerhouse of the cell'. Their primary function is to perform cellular respiration to generate adenosine triphosphate (ATP), the primary energy currency of biological cells.
Think of the mitochondria as a mini power plant in every city; just as the power plant burns fuel to generate electricity for the city, the mitochondria burn nutrients to generate ATP for the cell.
Mitochondria = Mighty Powerhouse
C6тАЛH12тАЛO6тАЛ+6O2тАЛтЖТ6CO2тАЛ+6H2тАЛO+Energy(ATP) тАФ Overall cellular respiration reaction
Mitochondria convert nutrients like glucose and oxygen into energy through the process of aerobic respiration. This involves the Citric Acid Cycle (Krebs cycle) within the matrix and the Electron Transport Chain (ETC) across the inner mitochondrial membrane. The ETC uses a proton gradient to drive the enzyme ATP synthase to phosphorylate ADP into ATP: ADP+PiтАЛтЖТATP.
Mitochondria possess their own DNA (mtDNA) and ribosomes.
They are inherited maternally in humans.
The inner membrane is folded into structures called cristae to increase surface area for ATP production.
Efficient energy production via aerobic metabolism
Regulation of cellular metabolism
Production of reactive oxygen species (ROS) as a byproduct
Susceptible to mutations leading to mitochondrial diseases
Muscle contraction requiring high ATP turnover
Active transport across cell membranes
Mitochondria have a double membrane structure: an smooth outer membrane and a folded inner membrane.
Option A (Protein synthesis) is the function of Ribosomes.
Option C (Storage of genetic material) is the function of the Nucleus.
Option D (Digestion of waste) is the function of Lysosomes.
B is correct тАФ Mitochondria are specialized organelles that generate most of the chemical energy needed to power the cell's biochemical reactions through ATP production.
In exams, remember that while the Nucleus is the 'brain' and the Lysosome is the 'suicide bag' or 'waste disposal system', the Mitochondria is the 'powerhouse'. Always associate Mitochondria with ATP synthesis.
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