Question

Peptide synthesis inside a cell takes place in

• A. Chloroplast
• B. Mitochondria
• C. Chromoplast
• D. Ribosomes

Hint:

Chromoplast and chloroplast are found in plants and perform specific functions. 

Answer 1

The Correct Option is D

Peptide synthesis within a cell refers to the process of protein synthesis, which takes place in ribosomes. Let's go through each of the given options to identify the correct answer:

1. Chloroplast:

   Chloroplasts are involved in photosynthesis, where they convert solar energy into chemical energy stored in glucose. They are not primarily involved in peptide synthesis.

2. Mitochondria:

   Mitochondria are known as the powerhouse of the cell, generating ATP through oxidative phosphorylation. They play a secondary role in producing certain proteins, but they are not the primary site for general peptide synthesis.

3. Chromoplast:

   Chromoplasts are involved in the synthesis and storage of pigments that give plants their color. They do not participate in protein synthesis.

4. Ribosomes:

   Ribosomes are the cell's protein factories where mRNA is translated into polypeptides. Therefore, the peptide synthesis primarily occurs here.

Based on the explanations above, ribosomes are the right choice as they are the organelles directly responsible for synthesizing proteins by translating the genetic code. Hence, the correct answer is:

Ribosomes