Multiple Choice
Which step of translation is depicted when the ribosome assembles around the start codon and the initiator tRNA binds to the mRNA?
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15. Gene Expression
Introduction to Translation
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During translation, small organelles called ____ read the mRNA sequence.
A
lysosomes
B
nucleoli
C
mitochondria
D
ribosomes
Verified step by step guidance1
Understand the process of translation: Translation is the process by which the genetic code carried by mRNA is decoded to produce a specific protein. This occurs in the cytoplasm of the cell.
Identify the organelle responsible for translation: Translation is carried out by ribosomes, which are small organelles composed of rRNA and proteins. They serve as the site where mRNA is read and translated into a polypeptide chain.
Eliminate incorrect options: Lysosomes are involved in breaking down cellular waste, nucleoli are involved in ribosome production but do not participate in translation, and mitochondria are responsible for energy production, not translation.
Confirm the correct answer: Ribosomes are the organelles that read the mRNA sequence during translation and facilitate the assembly of amino acids into a protein.
Conclude: The correct answer is 'ribosomes,' as they are directly involved in the translation process.
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