Peptide synthesis inside a cell takes place in:[2011]a)chloroplastb)mitochondria c)chromoplastd)ribosomesCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Protein synthesis is carried out by ribosomes on a mRNA template. The mRNA carries genetically coded information for protein synthesis which is translated by ribosomes.

Answer

Peptide synthesis generally take place in ribosome through the process of translation which occur the to ribosome unit I joined by the magnesium ion the emerald come from the nucleus and bind to the ribosome and the process of translation proceed so the correct answer for the peptide synthesis Is ribosomes

Answer

D

Answer

DDD

Answer

Ribosomes are responsible for peptide synthesis inside a cell.

Ribosomes are small, complex structures found in the cytoplasm of both prokaryotic and eukaryotic cells. They are composed of ribosomal RNA (rRNA) and proteins. Ribosomes play a crucial role in protein synthesis by translating messenger RNA (mRNA) into polypeptide chains.

Explanation:

1. Role of Ribosomes in Protein Synthesis:
- Ribosomes are responsible for the synthesis of proteins from amino acids, a process known as translation.
- The ribosomes read the genetic information encoded in the mRNA and assemble the corresponding amino acids in the correct order to form a polypeptide chain.
- This polypeptide chain can then fold into a functional protein or undergo further modifications to become a functional protein.

2. Structure of Ribosomes:
- Ribosomes can be found either free in the cytoplasm or attached to the endoplasmic reticulum (ER).
- They consist of two subunits, a large subunit, and a small subunit, which come together during protein synthesis.
- The large subunit contains three binding sites for tRNA (transfer RNA), while the small subunit contains the mRNA-binding site.
- The ribosomes provide the platform for the interaction between mRNA, tRNA, and amino acids during translation.

3. Peptide Synthesis:
- Peptide synthesis involves the formation of peptide bonds between amino acids to form a polypeptide chain.
- During translation, the ribosomes read the mRNA in groups of three nucleotides called codons.
- Each codon specifies a particular amino acid to be added to the growing polypeptide chain.
- Transfer RNA (tRNA) molecules carry the corresponding amino acids to the ribosomes, where they are added to the growing polypeptide chain.
- The ribosomes catalyze the formation of peptide bonds between adjacent amino acids, resulting in the synthesis of a polypeptide chain.

4. Conclusion:
- Peptide synthesis inside a cell takes place in ribosomes.
- Ribosomes play a central role in protein synthesis by translating mRNA into polypeptide chains.
- They provide the platform for the interaction between mRNA, tRNA, and amino acids, catalyzing the formation of peptide bonds.
- Other organelles, such as mitochondria, chloroplasts, or chromoplasts, do not have the machinery necessary for peptide synthesis, making option 'D' the correct answer.

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