In Escherichia coli, when the lac operons is fully induced (in the presence of lactose)
A. The lac repressor is active and transcription of the lac operon does not occur
B. The lac repressor is inactive and transcription of the lac operon does occur
C. Lactose cannot be transporter by the cells
D. Lactose cannot be cleaved to enter glycolysis
Ans: B. The lac repressor is inactive and transcription of the lac operon does occur
You might also like to view...
Nitrogen can be obtained from either organic or inorganic sources.
Answer the following statement true (T) or false (F)
What type of population growth effect is a flood that washes away many rabbits of population?
a. a density-dependent factor b. a limiting factor dependent on the individuals c. a consequence of exponential growth d. a density-independent factor e. an initial carrying capacity
Atoms with the same number of protons but with different electrical charges _____.
a. have different numbers of neutrons b. have different atomic masses c. are different ions d. are different isotopes e. have different atomic numbers
Suppose the pigmentation of a Labrador retriever's fur is subject to epistasis of the B alleles by the e alleles. B (black) is dominant over b (chocolate brown). E is dominant over e. Homozygous e is epistatic to the black and chocolate genes. Given this information, what genotype would give a yellow (or "golden") retriever?
a. BBEe b. BBee c. BbEe d. bbEE