Respiration

Question 1

Where does respiration take place

Answer 1

Mitochondria

Question 2

What are the respective areas of the process in mitochondria

Answer 2

Glycolysis- cytoplasm
Link reaction-in mitochondrial matrix
krebs cycle- mitochondrial matrix
Oxidative phosphorylation- matrix/ intermembrane space

Question 3

What is glycolysis in escence

Answer 3

production of pyruvate(3c molecule from glucose)

Question 4

What are the products of glycolysis

Answer 4

4 ATP, 2 pyruvate, 2 reduced NAD

Question 5

What happens in phosphorylation of glycolysis

Answer 5

Glucose is phosphorylated twice (hexose phosphate, hexose bisphosphate)
the hexose bisphosphate is unstable to it splits into 2 triose phosphate molecules

Question 6

What happens in oxidation (glycolysis)

Answer 6

triosephosphate molecules is dephosphorylated by ADP (makes 4 ATP molecules)
NAD removes hydrogen to become NADH so it is dehydrated
makes pyruvate

Question 7

What are the products of the link reaction

Answer 7

2 Acetyl coA, 2 NADH, 2 CO2

Question 8

What happens in link reaction

Answer 8

3C pyruvate, Is decarboxylated to give off CO2 2C now and NAD is reduced to make NADH -> Acetate which binds onto CoA which makes acetyl CoA

Question 9

Products of Krebs cycle 1

Answer 9

1- CoA
1- Oxaloacetate
2- CO2
1- ATP
3NADH
1FADH

Question 10

Krebs cycle

Answer 10

Acetyl CoA first loses the CoA which is reused, the Acetate then binds onto 4C oxaloacetate which makes citrate(6C), This is Decarboxylated and Oxidised by NAD to make a 5 C carbon.
5C carbon undergoes
- oxidation By NADH twice, oxidation by FADH, phosphorylation to remake oxaloacetate

Question 11

What is substrate level phosphorylation

Answer 11

When a phosphate group is directly transferred from one molecule to anotehr