Metabolism

Question 1

What is metabolism

Answer 1

complement of the reactions that happen in the cell

Question 2

Catabolism

Answer 2

Breakdown of larger molecules into smaller ones: release energy exergonic

1. removal of the alpha amino group in the form of ammonia-deamination
2. conversion of ammonia into urea- urea cycle
3. conversion of remaining carbon unit into intermediates to enter into the citric acid cycle

Question 3

Anabolism

Answer 3

synthesis of larger molecules from smaller ones: cost energy endergonic

Question 4

Catabolic pathways

Answer 4

1. Hydrolysis in the stomach/small intestine
2. Degradations in the cells to give acetyl CoA
3. Oxidation in the citric acid cycle to give CO2
4. Formation of ATP from ADP in the electron transport chain

Question 5

Transamination

Answer 5

the NH2 group of the amino acid is exchanged with the ketones group of a alpha-ketoglutarate forming a new alpha-keto acid and glutamate
Catalysed by aminotransferases- use coenzyme pyridoxal phosphate

Question 6

Ketogenic

Answer 6

converted into acetoacetate or acetyl CoA

Question 7

Glucogenic

Answer 7

converted into pyruvate or intermediate