Which cell organelle is necessary for complete oxidation of glucose?
Answers
Answer:
The correct answer is mitochondria.
It is because mitochondria contains most of the enzymes required for complete oxidation of glucose.
Complete oxidation of glucose and ATP (adenosine triphosphate) production can be divided into five steps: glycolysis, pyruvate dehydrogenase reaction (conversion of pyruvate into acetyl Co-A), Krebs cycle, electron transport chain, and oxidative phosphorylation (ATP synthase).
Glycolysis takes place in cytoplasm while all other reactions take place in mitochondria.
Krebs cycle and oxidation of pyruvate takes place in mitochondrial cortex.
Electron transport chain is located in the inner membrane of mitochondria. It derive protons in inter-membrane space of mitochondria and forms proton gradient across inner membrane.
Lastly, ATP synthase located in the inner membrane uses the energy derived from chemiosmosis (protons from inter-membrane space are transported into the matrix down the concentration gradient) to phosphorylate ADP to ATP.
The process of glycolysis refers to breaking down of glucose into two molecules of pyruvic acid.
Presence of Oxygen: During the Kerb’s cycle, acetyl CoA is formed from pyruvic acid when oxygen is present and is responsible for the complete oxidation of glucose.
Oxygen is required for the complete oxidation of glucose.
Mitochondria is the organelle that acts as the powerhouse.
It is responsible for providing oxygen and the provide energy for the complete oxidation of glucose.
Hence, the answer is mitochondria.
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