Cell Respiration Quiz Flashcards
Aerobic respiration
Consumption of organic molecules, yielding ATP
Fermentation
Partial degradation of sugars (without O2)
Anaerobic respiration
Consumption of organic molecules without O2, yielding ATP
Cell respiration equation
C6H12O6 + 6O2 —> 6CO2 + 6H2O + ATP + heat
Energy harvest via NAD+
Electrons from organic compounds are first transferred to NAD+, a coenzyme. NAD+ works as an oxidizing agent in cell respiration, tapped to make ATP
Glycolysis beginning and end
Glucose –> pyruvate
Krebs cycle beginning and end
Pyruvate changed by O2 into acetyl coenzyme A —> oxaloacetate
Oxidative phosphorylation general process
In etc, there are electron acceptors that are reduced then oxidized while moving the electron, preventing too much energy and sending protons to ATP synthase
Products of glycolysis
Net gain of two ATP
2 NADH
2 protons
2 H2O
Products of Krebs cycle
1 ATP
3 NADH
1 FADH2
Product of oxidative phosphorylation
28 ATP
How much ATP does 1 glucose produce?
32 ATP
Types of fermentation
Alcoholic
Lactic acid
Fermentation builds on what?
Glycolysis
Product of alcoholic fermentation
CO2, 2 NAD+, ethanol used to make 2 ATP
Product of lactic acid fermentation
2 NAD+, 2 lactate used to create 2 ATP
Where does fermentation occur?
In microbes
Why would lactic acid fermentation occur in animal muscle?
Not enough O2
