Recall from the text the example of cell communication in Streptococcus pneumoniae: the rate of DNA uptake by pneumococcal cells increases sharply when they are at high density due to changes in gene expression brought about by signaling between cells
If the pneumococcal cells did not express receptor protein, how would the rate of DNA uptake be affected when the cells reach high density?
A. There would be no change in the rate of
DNA uptake.
B. There would be a larger than normal
increase in the rate of DNA uptake.
C. There would be a smaller than normal
increase in the rate of DNA uptake.
D. There would be a decrease in the rate of
DNA uptake.
A
You might also like to view...
As you saw while performing thin layer chromatography, photosynthetic pigments are mostly hydrophobic substances soluble in organic solvents but not in water-based solutions. How does this feature explain the location of these pigments within the chloroplast?
What will be an ideal response?
Most of the medically important multicellular parasites are arthropods or helminths
Indicate whether this statement is true or false.
Mutations of lacOC lead to attenuated expression of lac structural genes
Indicate whether the statement is true or false
In DNA, the base represented by an A always pairs with the base represented by
a. A. b. T c. C d. G