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.