Cellular respiration Flashcards
What are the reactants of the kreb cycle
PYRUVATE
Nad+,NADH,FADH2
Where does Cellular respiration occur?
Mitochondrial matrix
What does the Krebs cycle produce?
6CO2
ATP
(NADH & FADH2)
First step:
Pyruvate broken down
Pyruvate molecule is split into two carbon molecules
A molecule of carbon dioxide which is given off as a waste product
High-energy electrons are transformed from the two carbon molecule to NAD+, Forming a molecule of NADH
The NADH moves to the electron transport chain
Step two
Coenzyme A
Molecule called coenzyme a bonds to the 2 carbon molecule made from the breakdown of Pyruvate
This intermediate molecule goes to the Krebs cycle
Step three citric acid form
The two carbon part of the intermediate molecule is added to a 4- carbon molecule to form a 6-carbon molecule called citric acid
CoA goes back to step two
Step four citric acid broken down
Citric acid molecule is broken down by an enzyme and a five carbon molecule is formed
In molecule of NADH is made and moves out of the Krebs cycle
A molecule of CO2 is given off as a waste product
Step 5 5 carbon molecule broken down
The five Carbon molecule is broken down by an enzyme
A 4 carbon molecule to molecule of NADH and a molecule of ATP are formed
The NADH leaves the Krebs cycle to CO2 is given off as a waste product
Step 6 4 carbon molecule rearranged
And the same is rearranged the floor carbon molecule
High-energy electrons are released
Molecules of NADH and FADA H2 which is another electron Carrier are made
They leave the Krebs cycle and the four carbon molecules remain
Where does the electron transport chain occur
Inner mitochondrial membrane
What are the electron transport reactants?
6C02
NADH, FADA H2, ADP
What does the electron transport chain produce
ATP and H2O
NAD+ and NADH
Step one of the electron transport chain
Electrons removed
Proteins inside the inner membrane of the mitochondria and take high-energy electrons from NADH and FADA H2.. Two molecules of NADH and one molecule of FADA H2 are used to.
Step two hydrogen ions transported - electron transport
High-energy electrons travel through the proteins in the electron transport chain. The proteins use energy from the electrons to pump hydrogen ions across the inner membrane to produce a chemosmotic gradient, just as in photosynthesis. The hydrogen ions build up on the inside of the inner mitochondrial membrane
Step three ATP produced - electron transport
Flow of hydrogen ions is used to make ATP. Hydrogen ions diffuse do a protein channel in the inner membrane of the mitochondria own. Channel is part of the ATP synthase enzyme. ATP synthase phosphate groups. ( ATP = between 36 and 38
Step four water formed - electron transport
Oxygen fully enters the cellular respiration process. Oxygen pick up electrons and hydrogen ions to form water. Water molecules are given off as waste