#Question id: 4107
#Unit 3. Fundamental Processes
Imagine that you have created a fusion between the Trp operon, which encodes the enzymes for tryptophan biosynthesis, and the Lac operon, which encodes the enzymes necessary for lactose utilization. Under which set of conditions (A–F below) will β-galactosidase be expressed in the strain that carries the fused operon?
A. Only when lactose and glucose are both absent.
B. Only when lactose and glucose are both present.
C. Only when lactose is absent and glucose is present.
D. Only when lactose is present and glucose is absent.
E. Only when tryptophan is absent.
F. Only when tryptophan is present.
#Question id: 11562
#Unit 7. System Physiology – Animal
The relationship between the insect hormones ecdysteroid and PTTH is an example of ________.
#Question id: 4557
#Unit 3. Fundamental Processes
In eukaryotic transcription RNA polymerase II is transcribed
#Question id: 10907
#Unit 6. System Physiology – Plant
The mechanism of phloem translocation in angiosperms is best explained by the pressure-flow model, this model is an example of,
#Question id: 4732
#Unit 8. Inheritance Biology
What is F2 phenotype ratio observed when a homozygous recessive mutation in either or both of two different genes results in the same mutant phenotype?