Zellbiologie

Metabolism (from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical transformations within the cells of living organisms.

Metabolism is a combination of breaking large molecules into bricks and rebuild large molecules with those bricks, that consumes energy, and/or produces some

Precursors (e.g. glucose, amino acids, fatty acids, bases) are “transformed” into complex molecules
(e.g. carbohydrates, proteins, lipids, DNA, RNA) by using the energy received from catabolism.

Catabolism (from Greek κάτω kato, "downward" and βάλλειν ballein, "to throw") is the set of metabolic pathways that breaks down molecules into smaller units that are either oxidized to release energy

Kilocalorie: (kcal or Cal) is 1000 cal or the amount of energy to elevate the temperature of 1 kg of water of 1°C

KiloJoule: (kJ) is roughly 4.2 kcal

oxydation of high energy bond to low ones