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Imagine a group of people who can’t get any dates. They are all depressed about it, and they keep each other depressed, which makes it even less likely that any will get a date. They are tense, “turned off”, and inactive. Then one of the depressed group gets a date and gets so excited about it that all the other friends in the group get so enthusiastic that they get dates too. They are “turned on”, relaxed, hip, groovy ad active.
My MCAT biology book’s way of explaining how cooperative enzymes work.
