Transformation is a process in which bacteria take up new DNA released by dead c

Question

Transformation is a process in which bacteria take up new DNA released by dead cells and integrate it into their own genomes. In Streptococcus pneumonia (which causes many cases of pneumonia, inner-ear infections, and meningitis) the ability to carry out transformation requires from 105 to 124 genes, collectively termed the comregulon. The com regulon is activated in response to a protein called competence-stimulating peptide (CSP), which is produced by bacteria and is exported into the surrounding medium. When enough CSP accumulates, it attaches to a receptor on the bacterial cell membrane, which then activates a regulator protein that stimulates the transcription of genes within the com regulon and sets in motion a series of reactions that ultimately results in transformation. The com regulon in Streptococcus pneumoniae appears to be controlled through which type of gene regulation? Explain your answer.

a. Negative inducible

b. Negative repressible

c. Positive inducible

d. Positive repressible

Explanation / Answer

c. it is a type of positive inducible gene regulation ---- it is activated by the presence of called competence stimulating peptide , which acts as an inducer and activates a regulator protein that stimulates the transcription of genes within comregulon and sets in motion a series of reactions that ultimately results in transformation.

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