Metabolism Flashcards
How is atp derived during catabolism?
From breakdown of carbohydrates, lipids and proteins
What is the energy source for metabolism?
ATP
What is the ATP derived from catabolism used for in anabolism?
In synthesis of cellular components
What are catabolism and anabolism referred to when combined?
Metabolism
What is the primary carb used to produce energy?
Glucose
When does glycolysis occur?
In the presence or absence of oxygen
How many molecules of glucose get converted to pyruvate?
1 glucose –> 2 pyruvate
How many ATP are gained during glycolysis? And how?
2 ATP via substrate level phosphorylation
How many NADH are gained during glycolysis?
2
What is TCA cycle Aka?
Krebs cycle
What happens to pyruvic acid during TCA (KC)?
It is completely oxidized to water and CO2
How many ATP, NADH, and FADH2 are gained during TCA?
2 ATP, 6 NADH, 2 FADH2
What is the final electron acceptor in the electron transport chain?
Oxygen
What is ATP synthesized as a result of during ETC? And what is this referred to as?
Proton motive force generated by passing electrons along chain. = chemiosmotic theory
What is oxidative phosphorylation?
The use of reducing power of NADH and FADH2 to synthesize ATP.
What is the process of transferring electrons from NADH and FADH2 to oxygen called?
Aerobic respiration
What is anaerobic respiration?
In an absence of oxygen, electrons are transferred to an inorganic terminal electron acceptor (such as sulfur)
What is fermentation?
In the absence of oxygen if electrons are transferred to an organic terminal electron acceptor
What is the ATP yield from catabolism of glucose during aerobic respiration?
38 ATP
What is the ATP yield from catabolism of glucose during anaerobic respiration?
30 or less ATP
What is the ATP yield from catabolism of glucose during fermentation?
2-4 atp
