Cellular Respiration: (with oxygen)-Electron Transport

Cellular Respiration: Goal—break down energy stored in carbon bonds!

•_______ the energy stored in carbon bonds

•With Oxygen: This takes place in the _____________

•Mitochondrion: The site of Respiration in all cells

Last Step: Electron Transport Chain—Where oxygen comes to play!

Enzymes for ELECTRON TRANSPORT CHAIN are located in the: ____________________________

ETC uses high energy electrons from Krebs Cycle toconvert ADP into ATP

Takes place on mitochondrial membrane (inner membrane)

Electron Transport Chain Movie:

Use the graphic organizer to start making notes about the Electron Transport Chain

Electron Transport Chain Movie:

Use the graphic organizer to start making notes about the Electron Transport Chain

Details about Electron Transport Chain:

•High energy ____________ from _________ and ___________ are passed along the electron transport chain.

•Energy from the passing electron is used to transport __________________ across the membrane building up concentration gradient!!!

•At the end of the chain, an enzyme combines the electrons with the hydrogen ions and oxygen to form __________.

•The pumping of H+ ions into ___________________ results in the potential energy that will be used!

•Higher concentration of _______ at the inter membrane space compared to the matrix Build-up of Potential Energy (PE)

•As H+ rushes through a membrane enzyme, ______________. The kinetic energy from the H+ ion _______ the ATP Synthase, converting __________ to _________.

The Final Step: ATP Synthase

The payoff ($$) : LOTS of ATP molecules formed in this final step! Used up: oxygen is used as _______ __________to form water.

Cellular Respiration: (with oxygen)-Krebs Cycle

The Krebs cycle: steps in respiration

•Krebs Cycle:

•Input: pyruvic acid from ____________.

•Output: • Multiple reactions that strip carbon atoms and form _______ _________(released into the atmosphere)

• ATP and other high energy molecules are generated

Image from BIOLOGY Miller and Levine; Prentice Hall Publishing

_______________ follows glycolysis if oxygen is present

Krebs Cycle Movie Clips:

Use the graphic organizer to start making notes about the Krebs Cycle.

Krebs Cycle Movie Clips:

Use the graphic organizer to start making notes about the Krebs Cycle.

REMEMBER:

Glycolysis happens inthe ________________outside the mitochondria.

Krebs cycle happens in_____________ the _________ of the mitochondria.

Diagram by Riedell

Step 1: Citric Acid Production:

• ________________ enters mitochondria. _______ ___________ is removed, forming ________ ________.

• Energy carrier now has electrons.

Another view of Citric Acid formation

Diagram by Riedell

Step 2: Energy Extraction (Citric Acid Cycle)

• ______ ______ enters the next stage forming ______ ______ and broken down.

• More ______ ________ is released

• More high energy ___________ gets carried away

KREBS CYCLE PRODUCES:

KREBS CYCLE: Overall Process

WHERE DO THESE GO?

Carbon dioxide is released into the ________________

WHERE DO THESE GO?

ATP can be used directlyto supply __________ for the cell.

High energy electron carriers move into the

____________________

•The energy stored in ________ molecule is released in every living cell by another organelle called a ____________,

Ingredients of respiration•T

he raw material (__________) of respiration:•A

. ________: C6H12O6

•B. _______: O2

Energy use produces interesting waste products:

•A. _______ ________: CO2

•B. ________: H2O

The Chemical Equation: •

C6H12O6 +6O2= 6CO2+6H2O +energy

•How would you describe this formula?

The chemical breakdown of glucose happens in two steps

•Step 1. Splitting glucose: __________This takes place in the cytoplasm

•One 6 carbon _______ molecule is split in _____

•Glycolysis happens _________ of the mitochondria, in the cytoplasm.

•Don’t you chew your food too?

Glycolysis Movie•http://www.brookings.k12.sd.us/biology/ch9respiration/Chapter%2009B.mpg

Glycolysis

Glycolysis does NOT require ______

BUT it needs some ____________to get it started.

What molecule do you think is going to

supply the energy do this?

_________.

***Put in ___ ATP, get back ___ ATP, so the NET gain is ____ ATP.

What happens after glycolysis:

WHATS THE BIG PICTURE?

Test yourself•1

. What is the purpose of cellular respiration?•2

. Where does it happen?•3

. Why is oxygen needed?•4

. What are the products?•5

. What carries energy around the cell?•6

. What are 2 organelles involved in storing energy for life?