Chapter 11: Anabolism: The Use Of Energy In Biosynthesis

Front 1

Anabolism

Back 1

energy from catabolism is used for biosynthetic pathways

using a carbon source and inorganic molecules, organisms synthesize new organelles and cells (just 12 precursor metabolites!)

a great deal of energy is needed for anabolism

Front 2

turnover

Back 2

continual degradation and resynthesis of cellular constituents by nongrowing cells

Front 3

metabolism is carefully regulated

Back 3

for rate of turnover to be balanced by rate of biosynthesis

Front 4

Biosynthesis Efficiency

Back 4

1. Large molecules are made from small molecules – saves genetic storage capacity, biosynthetic raw materials and energy
e.g. 20 amino acids used to make all proteins

Front 5

Precursor Metabolites

Back 5

generation of precursor metabolites is critical step in anabolism

carbon skeletons are used as starting substrates for biosynthetic pathways

-examples are intermediates of the central metabolic pathways
-(Glycolysis and TCA)
-most are used for the biosynthesis of amino acids