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Cellular Respiration Essay

2556 words - 11 pages

Chapter 9
Cellular Respiration
— Objectives
— Equation for Cellular Respiration
— Electron Carriers and Redox Reactions
— Process of Cell Respiration
— Glycolysis
— Prep Reaction
— Krebs Cycle (Citric Acid Cycle)
— Electron Transport Chain
— Fermentation
— The Ingredients
— You already know what is needed for Cellular Respiration
Food + Oxygen Carbon Dioxide+ Water +ENERGY!
C6H12O6 + O2 CO2 +H2O + ATP
— Redox Reactions (the shuffling of electrons)
• Most of the reactions involved in the process are possible because of the redox reaction of NAD, an electron carrier
• Oxidation – a reaction in which a substance loses ...view middle of the document...

— 4 ATP molecules were produced in Glycolysis
— 2 ATP molecules were produced in the Krebs Cycle
— Therefore the net yield is 4 ATP molecules
— A Look Back At the Equation:
— C6H12O6 + O2 CO2 +H2O + ATP
— A Look Back At the Equation:
— C6H12O6 + O2 CO2 +H2O + ATP
So far, we have used glucose and produced carbon dioxide and a little ATP
How does the oxygen and water fit in to this?
— Electron Transport Chain
— Occurs in the inner membrane of the mitochondria
— This is the reason for the many folds of the mitochondrial matrix
— Increase surface area allows for more respiration
— Electron Transport Chain
(the shuffling of electrons)
— The electrons from glycolysis and Krebs come to the ETC.
— The proteins embedded in the membrane are specific enzymes that allow NADH and FADH to donate their electrons (e-)
— Electron move to inside of the membrane but protons (H+) get pumped to the outside
— Electron Transport Chain
— Once the concentration gradient is great, the enzyme, ATP synthase allows H+ back inside.
— Phosphates are added to ADP molecules to make 34 ATP
— Oxygen accepts the H+ to produce H2O
— Electron Transport Chain
— Electron Transport Chain Animation
— http://vcell.ndsu.edu/animations/etc/movie.htm
— The process of cellular respiration in the presence of oxygen results in the production of 36 ATP molecules and is known as aerobic respiration
Cellular respiration occurring when oxygen is not present is known as anaerobic respiration or fermentation
— Fermentation
— Occurs when there is no oxygen present
— Only glycolysis occurs
— Alcoholic Fermentation: fungus (yeast)
pyruvic acid converts to acetaldehyde to produce ethanol
— Beer and wine (alcohol) is merely the waste product of yeast
— CO2 is given off and used in baking
— Fermentation
— Lactic Acid Fermentation:
Animals such as bacteria
— Pyruvic acid is converted to lactic acid
— Yogurt is made this way
— Our muscles burning during exercise is an example
— A Song To Help You Remember:
— http://www.youtube.com/watch?v=wqqYIgY40OE&feature=related
— This is a remake of the Red Hot Chili Peppers "Californication" It is intended to teach the process of Cellular Respiration
Lyrics:

It all starts in your stomach
With that awful, deep sensation
You fill your mouth with food
That comes from Photo-syn-thi-zation
And as you chew amylase eats through
It's straight up mastication

And the enzymes start to break down food
Catabolic transformation
The glucose travels through
Your blood, its active transportation
It moves across cell membranes, now
To Cellular Respiration

It all starts with glycolysis
Anaerobically ensuing
A molecule of glucose used
2 pryuvates it's producing

But is that all?
No that's not all!
2 Molecules of ATP(e)
2 Molecules of NADH

Pryuvates move to the mitochondria
And go through some conversions
They transform to acetyl CoA
And that's the alteration
We get out one NADH
...

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