Biology / Unit 3 Bio 0483 short lesson, about 20 seconds
Anabolic and Catabolic Pathways
Captions available
The idea
An anabolic pathway builds complex molecules from simpler ones and requires energy; a catabolic pathway breaks complex molecules down and releases energy.
In practice
Building muscle protein after a meal is anabolic; burning stored fat during a fast is catabolic.
Where people slip
The two pathways are opposite directions on one chemical relationship, not two unrelated processes.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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