7.4 Flashcards
What is the first stage of cellular respiration?
Glycolysis
What is the second stage of cellular respiration?
Krebs Cycle
What is the third stage of cellular respiration?
Electron Transport Chain
What are the inputs of glycolysis?
- Glucose
- 2 NAD+
- 2 ATP
- 4 ADP
- 4 Pi
What are the outputs of glycolysis?
- 2 Pyruvate
- 2 NADH
- 4 ATP (net gain 2 ATP)
What are the inputs of the Krebs Cycle?
- Acetyl-CoA
- 3 NAD+
- FAD
- GDP
- Pi
What are the outputs of the Krebs Cycle?
- 2 CO2
- 3 NADH
- FADH2
- GTP (or ATP)
What are the inputs of the Electron Transport Chain?
- NADH
- FADH2
- O2
What are the outputs of the Electron Transport Chain?
- ATP
- H2O
- NAD+
- FAD
Where does glycolysis occur?
Cytoplasm
Where does the Krebs Cycle occur?
Mitochondrial matrix
Where does the Electron Transport Chain occur?
Inner mitochondrial membrane
What is the overall chemical equation for cellular respiration?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP
What is ATP?
Adenosine triphosphate, the energy currency of the cell
What process generates ATP in the presence of oxygen?
Aerobic respiration
What process generates ATP in the absence of oxygen?
Anaerobic respiration or fermentation
What are the main products of aerobic respiration?
ATP, carbon dioxide, and water
What are the main products of anaerobic respiration?
ATP and lactic acid or ethanol
Fill in the blank: Aerobic respiration occurs in the _______.
mitochondria
Fill in the blank: Anaerobic respiration occurs in the _______.
cytoplasm
True or False: Aerobic respiration is more efficient than anaerobic respiration.
True
How many ATP molecules are produced per glucose molecule during aerobic respiration?
Approximately 30-32 ATP molecules
How many ATP molecules are produced per glucose molecule during anaerobic respiration?
Approximately 2 ATP molecules
What is the role of oxygen in aerobic respiration?
Oxygen acts as the final electron acceptor in the electron transport chain
What is a byproduct of anaerobic respiration in muscle cells?
Lactic acid
What is a byproduct of anaerobic respiration in yeast?
Ethanol and carbon dioxide
Fill in the blank: The Krebs cycle occurs during _______ respiration.
aerobic
What is glycolysis?
The process that breaks down glucose to produce ATP, occurring in both aerobic and anaerobic respiration
True or False: Fermentation is a type of anaerobic respiration.
True
