Lab #13: Fermentation Flashcards
(18 cards)
What is the end product of gycolysis?
2 pyruvate molecules
What pathways can glycolysis products enter?
Aerobic Respiration: Citric Acid Cycle + ETC
or
Anaerobic Respiration: Fermentation
What determines what pathway the products of glycolysis continue down?
The presence of absence of oxygen (aerobic vs anaerobic conditions)
What are the two “interdependent” biochemical reactions in anaerobic respiration?
Glycolysis and Fermentation
What is an intermediate product of glycolysis?
G3P –> Glycerol-3-phosphate
The conversion of G3P to pyruvate produces what?
ENERGY –> In the form of NADH + ATP
What is the overall reaction formula for glycolysis?
What is the role of oxygen in oxidative phosphorylation?
Oxygen serves as the FINAL electron acceptor within the ETC!
Why is pyruvate referred to as a “metabolic fork in the road”?
Because once pyruvate is formed (glycolysis is complete), it can either enter into aerobic or anaerobic respiration pathways depending on the oxygen conditions
What are the main forms of fermentation?
Lactic Acid Fermentation and Alcohol Fermentation
What occurs in lactic acid fermentation?
Pyruvate is REDUCED in the presence of NADH to produced lactic acid and NAD+
What is the chemical formula for lactic acid fermentation?
In what instances or industries is lactic acid fermentation used?
Food industries to produce things like yogurt and cheese
+
During muscle fatigue
Alcohol Fermentation General Process
1 : Glucose –> Acetaldehyde + CO2
For every ONE molecule of glucose fermented, how much of other products are produced?
ONE glucose –> Alcohol fermentation
==
2 CO2
2 Ethanol
2 ATP (net)
What is the chemical formula for alcohol fermentation?
How can we measure fermentation rates?
By tracking the products of fermentation!
What alcohol fermentation products can be tracked in order to determine fermentation rates?
1)
