7/17/2019 Chapter 25
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In terms of energy, anabolism is an "uphill" (requires energy) process that involves the
formation of new chemical bonds. Cells synthesize new organic components for four basic
reasons
!o erform #tructural $aintenance or %epairs.
!o #upport &rowth.!o roduce #ecretions.
!o 'uild utrient %eserves.
!he nutrient pool (food) is the source of the substrates for both catabolism and anabolism.. In
general, when a cell with ecess carbohydrates, lipids, and amino acids needs energy, it will
brea* down carbohydrates first. +ipids are the second choice, and amino acids are seldom
bro*en down if other energy sources are available.
functions.
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