Please select the correct statements regarding the central metabolic pathways. – Delving into the intricacies of central metabolic pathways, this comprehensive guide unravels their fundamental significance in cellular function. From glycolysis to oxidative phosphorylation, we explore the intricate interplay of these pathways, shedding light on their vital roles in energy production and biosynthesis.
Prepare to embark on an illuminating journey into the heart of cellular metabolism.
Central Metabolic Pathways Overview
Central metabolic pathways are fundamental to cellular function, providing the building blocks and energy required for cellular processes. Key pathways include glycolysis, the TCA cycle, and oxidative phosphorylation, which are essential for energy production and biosynthesis.
Glycolysis
Glycolysis is a series of enzymatic reactions that convert glucose into pyruvate, generating ATP and NADH. It occurs in the cytoplasm and is the first step in both aerobic and anaerobic respiration.
Steps of Glycolysis
- Glucose phosphorylation
- Glucose isomerization
- Fructose-1,6-bisphosphate cleavage
- Glyceraldehyde-3-phosphate oxidation
- 1,3-Bisphosphoglycerate dephosphorylation
- 3-Phosphoglycerate kinase reaction
- Phosphoglycerate mutase reaction
- Enolase reaction
- Pyruvate kinase reaction
TCA Cycle (Krebs Cycle)
The TCA cycle, also known as the Krebs cycle, is a series of enzymatic reactions that occur in the mitochondrial matrix. It generates ATP, NADH, and FADH2 through the oxidation of acetyl-CoA derived from pyruvate.
Steps of the TCA Cycle, Please select the correct statements regarding the central metabolic pathways.
- Citrate synthase reaction
- Aconitase reaction
- Isocitrate dehydrogenase reaction
- α-Ketoglutarate dehydrogenase reaction
- Succinyl-CoA synthetase reaction
- Succinate dehydrogenase reaction
- Fumarase reaction
- Malate dehydrogenase reaction
Oxidative Phosphorylation
Oxidative phosphorylation is a process that occurs in the inner mitochondrial membrane and generates ATP through the electron transport chain. Electrons from NADH and FADH2 are passed through a series of electron carriers, ultimately reducing oxygen to water.
Components of Oxidative Phosphorylation
- Electron transport chain
- ATP synthase
User Queries: Please Select The Correct Statements Regarding The Central Metabolic Pathways.
What is the significance of central metabolic pathways?
Central metabolic pathways are essential for cellular function, providing the energy and building blocks necessary for growth, reproduction, and repair.
How does glycolysis generate ATP and NADH?
Glycolysis generates ATP through substrate-level phosphorylation and NADH through the oxidation of glyceraldehyde-3-phosphate.
What is the role of the electron transport chain in oxidative phosphorylation?
The electron transport chain pumps protons across the inner mitochondrial membrane, creating a proton gradient that drives ATP synthesis by ATP synthase.
