Find your seat and quietly get out your chapter 6 worksheet for grading Think about photosynthesis so far. Write down your muddiest point(s) (most confusing idea).

I will be able to: Identify the two main steps of cellular respiration Compare lactic acid fermentation with alcoholic fermentation Calculate the ATP produced by cellular respiration Describe the difference between aerobic and anaerobic respiration

Cellular respiration – process where cells obtain energy from carbohydrates Produces ATP

1.Glycolysis 2.Aerobic respiration if oxygen present Anaerobic respiration (fermentation) if no oxygen present

Glycolysis – process where 1 glucose breaks down to form 2 pyruvic acids Occurs in cytosol What is cytosol? 2

Spend 2 ATP to start glycolysis 4 ATP are produced at end of glycolysis How many ATP are gained?

Spend 2 ATP to start glycolysis 4 ATP are produced at end of glycolysis How many ATP are gained? 2 ATP !!!!!!

2 ATP produced from glycolysis 2 ATP total

Happens in the cytosol Energy obtained from glucose with NO OXYGEN PRESENT 2 types of anaerobic respiration

How would you feel afterwards if you had to sprint ½ a mile?

1.Lactic acid fermentation Used to manufacture dairy products like cheese and yogurt Muscles produce lactic acid when they are tired and oxygen runs low

1.Lactic acid fermentation Body uses this for quick energy Lactic acid builds up in muscles causing soreness and pain

2.Alcoholic fermentation Done by some yeast when NO OXYGEN PRESENT Produces alcohol and carbon dioxide This is what causes bread to rise

OXYGEN IS PRESENT Occurs in mitochondria (powerhouse) Pyruvic acid broken down into carbon dioxide in a series of steps This releases energy Review: where does pyruvic acid come from?

Citric acid created here (sometimes called citric acid cycle) 2 ATP produced

2 ATP produced from glycolysis 2 ATP produced from Krebs cycle 4 ATP total

Electrons from Krebs cycle start chain reaction This forms ATP from ADP Occurs in mitochondria Water is also produced from hydrogen, oxygen, and spare electrons 34 ATP produced

2 ATP produced from glycolysis 2 ATP produced from Krebs cycle 34 ATP produced from electron transport chain 38 total WOW!!!!!!!!!

Cellular respiration produces long term energy This is good for long term exercise

Look at the formula for cellular respiration Now look at the formula for photosynthesis What do you notice?