Question Video: Recalling the Site of Translation within a Eukaryotic Cell | Nagwa Question Video: Recalling the Site of Translation within a Eukaryotic Cell | Nagwa

Question Video: Recalling the Site of Translation within a Eukaryotic Cell Biology • Third Year of Secondary School

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In eukaryotes, what cellular organelle is the site of translation?

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Video Transcript

In eukaryotes, what cellular organelle is the site of translation? (A) Mitochondria, (B) the nucleus, (C) ribosomes, (D) the cytoplasm, (E) the cell membrane.

In order for a gene in DNA to be converted into a protein, it needs to go through two steps. The first step is called transcription and involves the conversion of DNA into mRNA. The second step is called translation, where the sequence of mRNA is converted into a sequence of amino acids to form a polypeptide. This polypeptide can then go on to fold into a protein with a specific shape and function.

In eukaryotes, the site of transcription is inside the nucleus. After transcription, the mRNA is exported from the nucleus and enters the cytoplasm where it can be translated. Here, the mRNA can interact with an organelle called the ribosome. The ribosome is a large complex of proteins and RNA that work together with specialized tRNA molecules to convert the mRNA sequence into an amino acid sequence or a polypeptide.

Therefore, the cellular organelle that is the site of translation is given by answer choice (C), ribosomes.

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