SAT Subject Biology Practice Question 263: Answer and Explanation

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Question: 263

13. The antibiotic tetracycline works by binding to rRNA in prokaryotes. Which cellular activity does tetracycline directly disrupt?

A. Translation
B. Respiration
C. Transcription
D. DNA replication
E. Active transport

Correct Answer: A


The ribosome, which is involved in translation of mRNA to protein, is composed of rRNA. Binding rRNA disrupts translation.

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