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The list shows the nucleic acid molecules involved in gene expression within a cell - Scottish Highers Human Biology - Question 4 - 2023
Question 4
The list shows the nucleic acid molecules involved in gene expression within a cell. 1. rRNA 2. mRNA 3. DNA 4. tRNA Which of these molecules are required for transl... show full transcript
Worked Solution & Example Answer:The list shows the nucleic acid molecules involved in gene expression within a cell - Scottish Highers Human Biology - Question 4 - 2023
Step 1
Which of these molecules are required for translation?
Answer
To determine which nucleic acids are required for translation, it's essential to understand the roles of these molecules:
- mRNA (messenger RNA) is crucial as it carries the genetic information from DNA to the ribosome, where protein synthesis occurs.
- tRNA (transfer RNA) plays a key role in translation as it transfers amino acids to the ribosome, matching them with the corresponding codons on the mRNA.
- rRNA (ribosomal RNA) is part of the ribosome itself, providing the site for translation to occur and facilitating the assembly of amino acids into proteins.
- DNA is not directly involved in the translation process; it serves as the template for transcription to produce mRNA.
Thus, for translation, both mRNA and tRNA, along with rRNA, are required. Therefore, the correct answer is C (1, 2 and 4 only).