Question
Download Solution PDFWhat is the main function of ribosome in a cell?
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UP Police Constable Re-Exam 2024 Official Paper (Held On: 24th Aug 2024 Shift 2)
Answer (Detailed Solution Below)
Option 1 : Protein synthesis
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Download Solution PDFThe correct answer is Protein synthesis
Key Points
- Protein synthesis is the primary function of ribosomes in a cell.
- Ribosomes are complex molecular machines found within all living cells, serving as the site of biological protein synthesis (translation).
- They link amino acids together in the order specified by messenger RNA (mRNA) molecules.
- Ribosomes are composed of two subunits, the small subunit, which reads the RNA, and the large subunit, which joins amino acids to form a polypeptide chain.
- Protein synthesis is essential for cell growth, function, and replication.
Additional Information
- Ribosomes can be found floating freely within the cytoplasm or attached to the endoplasmic reticulum, forming rough ER.
- In eukaryotic cells, ribosomes are also found within mitochondria and chloroplasts.
- Ribosomes are made up of ribosomal RNA (rRNA) and proteins.
- The process of protein synthesis involves two main stages: transcription (in the nucleus) and translation (at the ribosome).
- During translation, tRNA molecules bring the appropriate amino acids to the ribosome based on the sequence of codons in the mRNA.
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