A bacterium can make the amino acid glycine or absorb it from its surroundings. A biochemist finds that glycine binds to a repressor protein and causes the repressor to bind to the bacterial chromosome, turning off an operon. If it is like other similar operons, the presence of glycine will result in the __________.

• A. inhibition of bacterial cell division
• B. breakdown of glycine
• C. formation of sex pili
• D. production of the repressor protein
• E. cessation of the synthesis of glycine