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12 April, 04:25

Can you match terms related to operons to their definitions? Drag the terms on the left to the appropriate blanks on the right to complete the sentences.

1. A (n) is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.

2. The is/are arranged sequentially after the promoter.

3. A (n) is a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.

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  1. 12 April, 04:39
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    1. A (n) operonis a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.

    2. The genes of an operon is/are arranged sequentially after the promoter.

    3. A (n) promoter is a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.

    4. A (n) regulatory genecodes for a protein, such as a repressor, that controls the transcription of another gene or group of genes.

    5. Regulatory proteins bind to the operator to control expression of the operon.

    6. A (n) repressoris a protein that inhibits gene transcription. In prokaryotes, this protein binds to the DNA in or near the promoter.

    7. A (n) inducer is a specific small molecule that binds to a bacterial regulatory protein and changes its shape so that it cannot bind to an operator, thus switching an operon on.
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