AP BIOLOGY

Detailed explanation-1: -In the process of fermentation the NADH + H+ from glycolysis will be recycled back to NAD+ so that glycolysis can continue. In the process of glycolysis, NAD+ is reduced to form NADH + H+.

Detailed explanation-2: -Lactic Acid Fermentation Most organisms carry out fermentation through a chemical reaction that converts the pyruvate from glycolysis into lactic acid or lactate. Lactic acid fermentation also converts NADH into NAD+ so that glycolysis can continue. The following diagram shows a summary of lactic acid fermentation.

Detailed explanation-3: -Ethanol fermentation regenerates NAD+ from NADH by releasing CO2 from pyruvate and reducing the two-carbon acetaldehyde molecule to ethanol.

Detailed explanation-4: -Fermentation can remove the electron from NADH molecules and regenerate NAD+ molecules which is need for glycolysis that picks up the electron where no need oxygen to pick up the electrons for continuing the body function.

Detailed explanation-5: -Lactic acid fermentation produces lactic acid (lactate) and NAD+. The NAD+ cycles back to allow glycolysis to continue so more ATP is made.