Cellular Control 0.0 / 5 ? BiologyDNA, genetics and evolutionA2/A-levelOCR Created by: AetherioxCreated on: 06-01-23 13:45 How many base pairs does the lac operon consist of? 6000 1 of 6 What enzyme does the structural gene lacZ code for? Beta-galactosidase. 2 of 6 What enzyme does the structural gene lacY code for? Lactose permease. 3 of 6 What prevents RNA polymerase from binding to a promoter region? Repressor Protein. 4 of 6 Why can lactose be respired by E.coli once glucose stores have been expired? Lactose binds to the LacI repressor protein, forming a inducer-repressor complex and allowing RNA polymerase to transcribe enzymes. 5 of 6 What percentage of genes are transcription factors in humans? 8% 6 of 6
Comments
No comments have yet been made