Question 3 Cells with the genotype lacl laco+lacP+lacz lacy in the presence of IPTG will show [Select] of beta galactosidase and [Select] of permease. Question 4 3 pts 3 pts Cells with the genotype lacl lacolacP+lacZ+lacy/lacl laco+lacP+lacz lacy in the absence of IPTG will show [Select] of beta galactosidase and [Select] of permease. Question 5 3 pts Cells with the genotype lacl laco lacP+lacZ+lacy in the presence of IPTG and glucose will show no expression of beta galactosidase and no expression of permease. Question 6 3 pts Cells with the genotype lacl laco+lacPlacz lacY+/lacl laco+lacP+lacZ+lacy in the presence of IPTG and glucose will show [Select] of beta galactosidase and [Select] of permease.
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In the presence of IPTG, these cells will show [Select] of beta-galactosidase and [Select] permease. Since lacP* indicates a mutation in the lac promoter, it means that the lac operon is constitutively expressed, regardless of the presence of lactose or IPTG. Show more…
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For genotype: lacI+ lacP+ lacO+ lacZ+ lacY+ / F' lacI- lacP+ lacO+ lacZ- lacY+ Select the best description of beta-galactosidase activity in the following environmental conditions. Lactose Present; Glucose Absent Lactose Present; Glucose Present Lactose Absent; Glucose Absent 1. High 2. Basal 3. None 4. Lower than basal For genotype: lacI+ lacP+ lacO+ lacZ+ lacY+ / F' lacI- lacP+ lacO+ lacZ- lacY+ Select the best description of permease activity in the following environmental conditions. Lactose Present; Glucose Absent Lactose Present; Glucose Present Lactose Absent; Glucose Absent 1. High 2. Basal 3. None 4. Lower than basal
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Match the result to the lac operon genotype. In all cases, assume that lactose is present in the environment and glucose is not present. Answers may be used more than once.
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