Anaerobic Respiration Flashcards
In plants and micro organisms such as yeast, what is pyruvate converted into?
Ethanol and carbon dioxide
When does anaerobic respiration occur?
When oxygen is absent
In animals, what is pyruvate converted in to?
Lactate
How is ethanol formed in plants and some microorganisms?
The pyruvate molecule formed at the end of glycolysis loses a molecule of carbon dioxide and accepts hydrogen from reduced NAD
What must occur in order for glycolysis to continue?
The reduced NAD must be removed
How is reduced NAD removed in animals?
Each pyruvate molecule produced takes up the 2 hydrogen atoms from the reduced NAD produced in glycolysis
What must eventually happen to the lactate produced?
It must be oxidised back to pyruvate
Once oxygen is available again, what can pyruvate be further oxidised into?
Glycogen or can release energy
Energy from cellular respiration is derived in 2 ways. What are they?
Substrate-level phosphorylation in glycolysis and the Krebs cycle, and oxidative phosphorylation in the electron transport chain
Which two processes of respiration do not take place during anaerobic respiration?
Krebs cycle and Electron transport chain
