Glycosis And Krebs Cycle

Question 1

What is a hydride ion

Answer 1

A hydrogen with and extra electron.

Question 2

Explain the glycolysis pathway

Answer 2

1.glycolysis is an anaerobic metabolic pathway with a low energy yield.
2.it’s reactant is glucose and products are 2 pyruvate and NADH

Question 3

What are the factors that lead to glycolysis during exercise

Answer 3

1.substrate availability- increased glycogenolysis favours glycolysis

2.physiological factors-greater blood flow

3.cellular factors-increased glucose uptake by glucose transporters

4.molecular factors-pyruvate kinase and phosphofructokinase enzymes involved with glycosis

Question 4

What is the Krebs cycle

Answer 4

1.It is a cycle that is an aerobic metabolic pathway with a low energy yield taking place in the mitochondrial matrix

2.reactant is ACETYL COA product is ATP NADH FADH

Question 5

Cytosol to mitochondria: pyruvate oxidation

Answer 5

1.shuttling of pyruvate to the mitochondria can yield large amounts of atp

2.pyruvate can be oxidised to acetyl coA via pyruvate dehydrogenase

Question 6

Krebs/Citric acid cycle

Answer 6

See graph