Anaerobic respiration

OCCURS IN CYTOPLASM

INVOLVES GLYCOLYSIS AND JUST ONE OTHER STEP

2 ATP PRODUCED PER GLUCOSE MOLECULE, COMPARED TO 38 AEROBICALLY

KREBS AND ELECTRON TRANSPORT CHAIN DON'T TAKE PLACE

FOR GLYCOLYSIS TO CONTINUE, PYRUVATE AND HYDROGEN MUST BE CONSTANTLY REMOVED

H MUST BE RELEASED FROM NADH IN ORDER TO REGENERATE NAD, OTHERWISE NAD WILL BE ENTIRELY CONVERTED TO NADH, LEAVING NO NAD TO TAKE UP H NEWLY PRODUCED FROM GLYCOLYSIS, WHICH WILL THUS HALT

REPLENISHMENT OF NAD ACHIEVED BY PYRUVATE MOLECULE FROM GLYCOLYSIS ACCEPTING H FROM NADH

PLANTS

GLUCOSE ---> CO2 + ETHANOL + 2ATP

PYRUVATE AT END OF GLYCOLYSIS LOSES CO2 TO PRODUCE ETHANAL BY DECARBOXYLATION.

ETHANAL ACCEPTS HYDROGEN FROM NADH TO PRODUCE ETHANOL BY REDUCTION

pYRUVATE + NADH ---> NAD + CO2 + ETHANOL

ANIMALS

PYRUVATE + NADH ---> LACTATE + NAD

H TAKEN UP BY NAD BECOMES NADH, USED TO REDUCE PYRUVATE INTO LACTATE.

NAD REGENERATED TO NADH BY ACCEPTING THE 2H FROM GLUCOSE

OXIDATION OF TP INTO PYRUVATE RELASES ATP (FOR PLANTS TOO)