This is because such a mechanism of regulation prevents the simultaneous addition and removal of glucose monomers, preventing unnecessary reactions. Additionally. the two processes occur in the same location in the sell, thus this regulation makes the net process more efficient. When glycogen phosphorylase is phosphorylated its activity increases and vicevarsa.
3:they are usually microscopic
Transport
The protein is working to transport substances across the membrane.
We see all of the moon's <em>shapes</em> every 29.53 days. But
there's about 45% of its <em>surface</em> that we never see.
