Question

select the part whose main job is to make proteins. chloroplast mitochondria smooth endoplasmic reticulum ribosome submit

Explanation:

To solve this, we recall the functions of each organelle:

• Chloroplast: Involved in photosynthesis (making food, not proteins).
• Mitochondria: Produces energy (ATP), not proteins.
• Smooth Endoplasmic Reticulum (SER): Involved in lipid synthesis and detoxification, not protein synthesis.
• Ribosome: The organelle responsible for protein synthesis (translation of mRNA to protein).

Answer:

ribosome