Fermentation

Glycolysis Review

Glycolysis and Respiration• Glycolysis

– Creates: ATP, Pyruvate, NADH

– Leads to either:

1) Aerobic Respiration With oxygen

present Kreb’s (Citric Acid)

Cycle Electron transport

chain

2) Anaerobic Respiration Without oxygen Fermentation

O2

No O2

glyco

lysis

ferm

enta

tion

Lactic Acid Fermentation

• Glycolysis

– Glucose (6C) broken down into two pyruvates (3C)

– 4ATP + NADH created

• L.A.F. Step 1: Happens when muscles do not receive oxygen

– NADH breaks down pyruvates into lactic acid (causes burn)

– Lactic acid breaks down upon oxygen returning

• L.A.F Step 2: NAD returns to glycolysis

• Glycolysis can break down another glucose to create 4 ATP

During heavy exercise, the oxygen you inhale mainly goes to your brain. Your muscles are now lacking oxygen.

But your muscles need ATP if you want to continue your exercise.

There must be a way to make ATP without the help of oxygen.

How to relieve sore muscles

How to relieve sore muscles:1)Massage2)Bananas/Dates3)Post stretch4)Hydrate

Alcoholic Fermentation

• Glycolysis– Glucose (6C) broken down into two pyruvates (3C)– 4ATP + NADH created

• A.F. Step 1: Happens in yeasts & some plants– NADH breaks down pyruvates into ethanol and CO2

• A. F. Step 2: NAD returns to glycolysis• Glycolysis can break down another glucose to create 4 ATP

CO2 from yeast causes bread to rise. So why is bread nonalcoholic?

Public Service Announcement: Proper Use of Alcohol

Maple Center Counseling Program

• The Safe Ride Program is a confidential service to Beverly Hills students. If a teenager feels he/she cannot drive safely, he/she can call (888) 654-3211 for a free ride home. This service is available every Friday and Saturday night from 10:00pm to 2:00am and on Prom Night and New Year’s Eve from 10:00pm to 6:00am.

Review• What does the word aerobic imply? Anaerobic?• How many ATP molecules are created by either type

of fermentation?• Before fermentation, which process must first take

place?• What is produced during glycolysis?• Which molecule from glycolysis is used to break apart

pyruvate during fermentation?• Besides alcohol, what is a waste product of alcoholic

fermentation?• Where can you find the phone number to the Maple

Counseling Center and Safe Ride?