The lac operon in e. coli consists of genes that code for enzymes necessary for the breakdown of lactose. when lactose is absent, the operon is inactive because a repressor protein binds to a specific site in the lac operon. when lactose is present, lactose molecules bind to the repressor protein, causing the repressor protein to dissociate from the binding site. in the absence of glucose (a preferred energy source for bacteria), the protein cap binds to a regulatory site near the lac promoter to activate transcription of the lac operon.
Answers: 2
Biology, 21.06.2019 14:40, Historyfinder
Are characterized by dry conditions, limited vegetation and wide temperature range. a.) tropical rain forests b.) deserts c.) grasslands d.) none of the above
Answers: 1
Biology, 22.06.2019 10:00, vadrian4056
Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.
Answers: 1
The lac operon in e. coli consists of genes that code for enzymes necessary for the breakdown of lac...
English, 31.07.2021 14:00
Mathematics, 31.07.2021 14:00
Mathematics, 31.07.2021 14:00
Biology, 31.07.2021 14:00
English, 31.07.2021 14:00
Mathematics, 31.07.2021 14:00