Florida Biology EOC Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

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What reads the mRNA molecule three nitrogen bases at a time during translation?

DNA polymerase

mRNA

rRNA and ribosomes

tRNA

The process of translation involves the synthesis of proteins from messenger RNA (mRNA) transcripts. During this process, ribosomal RNA (rRNA) along with ribosomes plays a crucial role in reading the mRNA molecule in groups of three nitrogen bases, also known as codons. Each codon corresponds to a specific amino acid, which are the building blocks of proteins.

While mRNA serves as the template that carries the genetic instructions from DNA, it is not responsible for reading itself. Instead, transfer RNA (tRNA) interacts with the mRNA at the ribosome to bring in the appropriate amino acids as dictated by the codons on the mRNA. Thus, the combination of rRNA and ribosomal structures is key in facilitating the reading of mRNA in sets of three nitrogen bases, interpreting the genetic code to build proteins correctly.

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