Cellular Respiration EXAM 2 Flashcards
What are the three main stages of cellular respiration?
- Glycolysis
- Citric Acid Cycle (Krebs Cycle)
- Oxidative Phosphorylation (Electron Transport Chain and Chemiosmosis)
Where does glycolysis occur?
In the cytoplasm of the cell.
Products of glycolysis
2 ATP, 2 NADH, and 2 pyruvate molecules.
Products of Citric Acid Cycle
Products of Oxidative Phosphoryation
Where does the citric acid cycle take place
mitochondrial matrix
What is the role of NADH and FADH₂ in cellular respiration?
They carry electrons to the electron transport chain for ATP production
Where does oxidative phosphorylation occur
In the inner mitochondrial membrane
What is the final electron acceptor in the electron transport chain
Oxygen (O₂)
What is chemiosmosis
The process of ATP production driven by the movement of protons (H⁺) across a membrane via ATP synthase.
How many ATP are produced from one glucose molecule during cellular respiration?
About 30-32 ATP (depending on the efficiency and transport)
What happens if oxygen is not present during cellular respiration?
Cells undergo anaerobic respiration or fermentation
