Cellular Respiration Questions and Answers Latest Version 100% Pass

Cellular Respiration Questions and Answers Latest Version 100% Pass What is the primary function of cellular respiration? The primary function of cellular respiration is to convert biochemical energy from nutrients into ATP, which cells use for energy. Where does glycolysis occur in the cell? Glycolysis occurs in the cytoplasm of the cell. What molecule is broken down during glycolysis? Glucose is the molecule broken down during glycolysis to form pyruvate. What is the final product of glycolysis? The final products of glycolysis are 2 molecules of pyruvate, 2 ATP, and 2 NADH. What is the role of oxygen in cellular respiration? Oxygen acts as the final electron acceptor in the electron transport chain, enabling the production of ATP. 2 What is produced during the citric acid cycle? The citric acid cycle produces ATP, NADH, FADH2, and carbon dioxide. How many ATP molecules are produced in the citric acid cycle? The citric acid cycle produces 2 ATP molecules per glucose molecule. What happens to the carbon atoms from glucose during cellular respiration? The carbon atoms from glucose are released as carbon dioxide during the citric acid cycle. Where does the electron transport chain occur in eukaryotic cells? The electron transport chain occurs in the inner mitochondrial membrane in eukaryotic cells. What is the main purpose of the electron transport chain? The main purpose of the electron transport chain is to transfer electrons through a series of proteins and produce ATP through oxidative phosphorylation. What is the role of NADH and FADH2 in cellular respiration? 3 NADH and FADH2 carry high-energy electrons to the electron transport chain, where they are used to generate ATP. What is the process of oxidative phosphorylation? Oxidative phosphorylation is the process where ATP is produced through the electron transport chain and chemiosmosis, powered by a proton gradient. How many ATP molecules are produced in the electron transport chain? The electron transport chain produces approximately 34 ATP molecules per glucose molecule. What is chemiosmosis? Chemiosmosis is the movement of protons across the mitochondrial membrane, driving the production of ATP via ATP synthase. What is the byproduct of cellular respiration that is exhaled by animals? The byproduct of cellular respiration that is exhaled is carbon dioxide. What happens to the electrons in the electron transport chain? 4 Electrons move through protein complexes in the inner mitochondrial membrane and ultimately combine with oxygen to form water. How does the proton gradient contribute to ATP production? The proton gradient created by the electron transport chain creates potential energy, which is used by ATP synthase to produce ATP. Why is glucose considered the main fuel source for cellular respiration? Glucose is easily broken down in glycolysis and provides the necessary electrons and carbon chains for the citric acid cycle and electron transport