Sec 8- Cellular Respiration Flashcards
Unit III- Energy Matters
1
Q
What does every organism extract energy from?
A
Every organism extracts energy from food molecules manufactured by photosynthesis or obtained from the environment (eating plants, other organisms, etc.)
2
Q
What are the different energy metabolism?
A
- Aerobic Metabolism
- Uses oxygen
- Aerobic/Cellular respiration
- Anaerobic Metabolism
- Uses no oxygen
- Anaerobic respiration
- Fermentation
3
Q
What is cellular respiration?
A
Its purpose is to produce ATP.
Includes four steps:
1. Glycolysis
2. Acetyl-CoA formation
3. Krebs cycle (citric acid cycle)
4. Electron transport chain
4
Q
Why do we breath?
A
If we don’t constantly take in oxygen and expire carbon dioxide, we die.
- Why?
Cellular respiration!
5
Q
What happens to glucose and oxygen in Cellular Respiration?
A
- Energy gets relaeased by “falling” electrons.
- Oxygen “catches” the fallen electrons.
- Hydrogen follows electrons
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