Which prevents the fac genes in the dna of e. coli from being expressed most of the time?
the lac repressor
the lac operator
the lac promoter
the lac locator

Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.

What is the next step in the process after a substrate enters the active site of an enzyme

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?