Aerobic & Anaerobic Respiration - Nabeel Jonathan Flashcards
Aerobic Respiration
Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process.
Anaerobic respiration
Anaerobic respiration is respiration using electron acceptors other than molecular oxygen.
Stages of Aerobic Respiration
There are three stages in the process of transforming glucose to ATP:
- Glycolysis
- The citric acid cycle
- The electron transport chain.
Krebs Cycle
The citric acid cycle is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
Kreb Cycle Steps
- dehydration
- hydration
- decarboxylation reactions.
Oxidative Phosphorylation
- occurs on cristate of mitochondria
- energy rich H-atoms are transferred from 1 hydrogen acceptor to the next.
- the final hydrogen acceptor is oxygen forming H2O
Differences between Aerobic & Anaerobic Respiration
- Aerobic Respiration only occurs in oxygen
- In Aerobic Respiration, a large amount of energy is released because the molecule is completely broken down.
- Anaerobic Respiration occurs in the absence of oxygen.
- In Anaerobic Respiration, a small amount of energy is released because the glucose molecule is only broken down partially
The products of Aerobic are…
- carbon dioxide
- oxygen
Anaerobic Respiration provides..
- lactic acid
- carbon dioxide
- ethanol
Anaerobic Respiration in muscle exercise
- during vigorous exercises
- glucose is broken down
- pyruvic acid is formed
Anaerobic Respiration in plants
- only glycolysis occurs.
- glucose is broken down
- pyruvic acid is formed
- CO2 is released
Lactic Acid Fermentation
- a toxin that leads to muscle stiffness and muscle pain
- oxygen is needed to convert the lactic acid back to pyruvic acid.
