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3 July, 06:43

If lactose is present, would the lac operon in bacterial cell be on or off? Explain

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  1. 3 July, 10:35
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    The lac operon

    When lactose is present, bacteria need the enzymes to break it down. But if no lactose is present, bacteria do not need to waste resources making enzymes to break down a sugar that isn't there. Like a switch, the operon is turned on when the enzymes are needed.
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