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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.
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
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.
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
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
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.
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?