In my study notes it gives a very brief explanation on enzymes regulated by feedback control and it is not making any sense to me.

 

it says...

 

"sequence of reactions whereby the last product D may stop the activity of E1, so that when D is low - the whole reaction is rapid conversely when D is high - the whole reaction is inhibited"

Basically, it means that the product inhibits an enzyme involved in the sequence of steps so that production is limited. In other words, in your specific case, D inhibits E1 so that the production of B (and all products down stream) is decreased.

 

PS: In the future, you might get quicker help if you post it in the homework help forum.

 

Have a great evening.

Basically, it means that the product inhibits an enzyme involved in the sequence of steps so that production is limited. In other words, in your specific case, D inhibits E1 so that the production of B (and all products down stream) is decreased.

 

PS: In the future, you might get quicker help if you post it in the homework help forum.

 

Have a great evening.

 

thanks for the help!