Glycolysis and Fermentation Flashcards
Q: What is the first step in cellular respiration?
A: Glycolysis
What are the four main events in cellular respiration?
- Glycolysis
- Pyruvate Oxidation & Citric Acid Cycle
- Electron Transport
- Oxidative Phosphorylation
What is the role of NAD+ in cellular respiration?
NAD+ serves as an important electron acceptor during cellular respiration
What are the reduced co-enzymes involved in energy transfer?
- NADH
- FADH2
What is the complete reaction of glucose oxidation?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy
What does glycolysis mean?
Glycolysis means Sugar Splitting
Where does glycolysis occur in eukaryotes?
In the cytosol
What are the products of glycolysis?
- 2 NADH
- 2 ATP (net)
- 2 pyruvate
Is oxygen required for glycolysis?
NO
What happens during fermentation in the absence of oxygen?
Pyruvate accepts the electrons and hydrogen from NADH, producing lactic acid and regenerating NAD+
What does lactic acid build up indicate?
It will build up if not removed quickly
What do yeast convert pyruvate into during fermentation?
Acetaldehyde, which serves as NADH’s electron acceptor
What are the products of fermentation in yeast?
- Ethanol
- CO2 gas
Fill in the blank: Glycolysis splits glucose into two molecules of _______.
pyruvate
True or False: All organisms can perform glycolysis.
True
