Question

in bacteria, the antibiotic tetracycline blocks the site where trna molecules enter the ribosome. the most likely reason that bacteria die from treatment with tetracycline is because the antibiotic
o causes the trna molecules to randomly arrange into proteins that do not function.
o causes trna rather than mrna to be made into proteins.
o prevents the bacteria from assembling essential proteins.
o inhibits the cell from producing the mrna.

Explanation:

• Option 1: Tetracycline blocks the site where tRNA enters the ribosome, not causing random arrangement.
• Option 2: tRNA doesn't get made into proteins; it helps in protein synthesis using mRNA.
• Option 3: Ribosomes use tRNA (which brings amino acids) and mRNA (has the code) to make proteins. If tRNA can't enter (due to tetracycline), essential proteins can't be assembled.
• Option 4: Tetracycline acts on the ribosome - tRNA interaction, not on mRNA production.

Answer:

pre - vents the bacteria from assembling essential proteins.