respiration

Question 1

where does glycolysis occur

Answer 1

in the cytoplasm

Question 2

where does link reaction occur

Answer 2

mitochondrial matrix

Question 3

where does krebs cycle occur

Answer 3

mitochondrial matrix

Question 4

where does oxidative phosphorylation occur

Answer 4

inner mitochondrial membrane

Question 5

describe the stages in glycolysis

Answer 5

glucose goes to glucose phosphate (phosphorylates using ATP)
glucose is phosphorylated using ATP to form 1,6 biphosphate
this splits into 2 triose phosphate molecules
these then form pyruvate oxidised by NAD+ and phosphate moved onto ADP to form ATP

Question 5

what does glycolysis produce overall

Answer 5

2 pyruvate
2 atp

Question 6

describe the stages in link reaction

Answer 6

pyruvate releases CO2 by reducing NAD (decarboxylation)
forming acetate
this combines with coenzyme A to form Acetyl Coenzyme A

Question 7

what does link reaction produce overall

Answer 7

2 x acetyl coenzyme a
2 x reduced NAD
2 x CO2

Question 7

describe the stages of krebs cycle

Answer 7

acetyl coenzyme A