Question

A microbiologist i under optimal is working with two genera of bacteria, A and B, to determine if cells are competent Strain minuteinti condit and DNA fragments that carry the gene for green fluorescent protein is added to each cut,e o each oulturew samples from each treatment are plated to nutrient agar and incubated, after which the plaes a ony the plates from sationary phase demonstrate fluorescent colonies. What can be concluded from the result? A. Both bacteria A and bacteria B cells are competent. B. Competence in bacteria A is constitutively expressed C. Competence in bacteria B is dependent on the phase of growth D. Neither bacteria A nor bacteria B cells are competence

Answer 1

Answer:

The correct option is C: "Competence in bacteria B is dependent on the phase of growth"

Explanation:

Since this set of cells produced fluorescent bacterial colonies, it means it took up the foreign strain of DNA and integrated in into its own plasmid. Since the other strain of cells was not able to present fluorescent bacterial colonies, something might have gone wrong or mishandled while preparing the competent cells.