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Zielflug [23.3K]
3 years ago
15

Item 1

Biology
1 answer:
chubhunter [2.5K]3 years ago
8 0
The Answer is C Gas exchange take place in our lungs
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• RNA polymerase with transcriptional factors bind to gene promoter Transcription factors can enhance the interaction between RNA polymerase and a DNA sequence- promoter, encouraging the expression of the gene. Such transcription factors are called activators. Otherwise, when the gene expression is inhibited, factors are called repressors and they bind to sequence –operator.

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