Recall from the text in the example of cell communication in streptococcus pneumoniae that 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?

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.