Respiration Flashcards
0
Q
What is glucose broken down into during glycolysis?
A
2 pyruvate (3C)
1
Q
Where does Glycolysis take place?
A
In the cytoplasm
2
Q
What are the products of glycolysis?
A
- 2 pyruvate
- 4 ATP (net gain of 2 as 2ATP used)
- 2 hydrogen, which reduce 2NAD to 2NADH
3
Q
What is a coenzyme?
A
A coenzyme Carrie a product from one reaction so it can be used in another
4
Q
Where does the link reaction take place?
A
Matrix of the mitochondria
5
Q
What happens to pyruvate during the link reaction?
A
- 2 pyruvate enter the mitochondria
- pyruvates are decarboxylated (2CO2 produced)
- pyruvates are dehydrogenated (2H produced) and reduce 2NAD to produce 2NADH
- pyruvates combine with 2coenzyme-A to produce 2 Acetyl-coenzyme-A
6
Q
How is acetyl coenzyme A produced
A
When pyruvate combines with coenzyme-A
7
Q
Where does the Krebs cycle take place?
A
The matrix of the mitochondria
8
Q
What does the Krebs cycle produce?
A
- CO2
- NADH
- FADH
- ATP
9
Q
Where does Oxidative phosphorylation (ETC) take place?
A
The inner membrane of mitochondria (cristae)
10
Q
Describe the process of Oxidative phosphorylation (bullet points)
A
- NADH AND FADH release hydrogens
- hydrogens split into e- and H+ ion
- electrons move down ETC making ATP
- ATP energy used by H+ ions
- H+ ions pumped over membrane into inter membrane space
- H+ ions move back over by diffusion via ATP-synthase, activating the enzyme
- lots of ATP is produced
- oxygen is final electron carrier/acceptor
- oxygen binds with electron and H+ ions to make water (a by product)
