Respiration Flashcards
(18 cards)
What is respiration?
The breakdown of food to obtain energy as ATP in the presence of oxygen.
What is the chemical equation for respiration?
C6H12O6 + 6O2 + H2O -> 6CO2 + ATP
What are the three processes in aerobic respiration?
- Glycolysis
- Krebs Cycle
- Oxidative Phosphorylation
Where does glycolysis occur?
In the mitochondrial cytoplasm and can happen without oxygen.
Where does the Krebs Cycle occur?
In the mitochondrial matrix and only with oxygen.
Where does oxidative phosphorylation occur?
In the mitochondrial cristae and only with oxygen.
What is the net ATP production from glycolysis?
2 ATP
What are the products of glycolysis from 1 glucose molecule?
- 2 pyruvate
- 2 NADH
- 2 ATP
What does pyruvate consist of?
A carboxyl group (COOH) and an acetyl group combined with coenzyme A (acetyl Co-A).
How many times does the bridge reaction occur for 2 pyruvate?
Twice
What is produced from one acetyl Co-A in the Krebs Cycle?
- 2 CO2
- 1 ATP
- 3 NADH
- 1 FADH2
What is the total production from two acetyl Co-A in the Krebs Cycle?
- 4 CO2
- 2 ATP
- 6 NADH
- 2 FADH2
What is the final electron acceptor in oxidative phosphorylation?
Oxygen
What happens to NADH and FADH2 in oxidative phosphorylation?
They are oxidized to NAD+ and FAD+.
What is the role of the hydrogen ions in oxidative phosphorylation?
They move down their concentration gradient into the matrix to stimulate ATP synthase to generate ATP.
How many ATP are generated during oxidative phosphorylation?
32 ATP
What is the word equation for respiration
glucose + oxygen -> water + carbon dioxide + ATP
What is the product from two acetyl Co-A and a Bridge reaction
- 6CO2
- 2ATP
- 8 NADH
- 2FAHD2
