Chapter 25 - Glycolysis and Fermentation

what is the goal of respiration?

to break down organic compounds and release ATP

the first step of cellular respiration

glycolysis

where glycolysis takes place

in the cytoplasm

aerobic cellular respiration

cellular respiration where oxygen is required

glycolysis

a multistep pathway that breaks down glucose into 2 pyruvate molecules

energy investment phase

the first 2 steps of glycolysis, 2 ATP are used to make fructose biphosphate (FBP)

energy payoff phase

the remaining steps of glycolysis, makes 4 ATP and 2 NADH

net ATP gain from glycolysis

2 ATP

anaerobic cellular respiration

cellular respiration that does not involve oxygen

NADH

energy used in aerobic cellular respiration in later steps that result in ATP production, oxygen is needed to turn it into ATP

fermentation

NADH donates its energized e^- to an organic molecule, no ETC is used

what is the goal of fermentation?

to regenerate NAD+ to use in glycolysis to make ATP

2 main types of fermentation

alcoholic fermentation and lactic acid fermentation