Examlex
Suppose that you own a rowboat and enjoy going rowing on a nearby lake in the summer. In June, you are planning to go rowing with two of your friends (three people total in the boat) , and in July, you are planning to go rowing with just one friend (two people total in the boat) . Will you put in more effort (row harder) on the three-person trip or on the two-person trip?
Repressor
A protein that binds to specific DNA sequences, preventing or reducing the transcription of certain genes.
Allosteric Site
A region on an enzyme that is distinct from the active site and can bind regulatory molecules to change the enzyme's activity.
cAMP
Cyclic adenosine monophosphate, a second messenger important in many biological processes.
Lac Operon
A gene regulatory system found in bacteria and some other organisms that regulates the metabolism of lactose, involving an operon required for the transport and metabolism of lactose.
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