The function of the ribosomes is the

Step 1: Analyze the question The question asks for the main function of ribosomes, a cell organelle.

Step 2: Explain the concept Ribosomes are tiny organelles made of rRNA and protein. They are found free in the cytoplasm or attached to the rough endoplasmic reticulum. They are the sites where amino acids are joined together, following the instructions carried by mRNA, to form polypeptides. This process is called translation. Because enzymes are also proteins, ribosomes make enzymes as well.

Step 3: Check each option

• A. Absorption of carbon dioxide from the air: Wrong. This is not a function of any single organelle. Gas exchange happens by diffusion, and in plants through the stomata.
• B. Control of all the vital activities of the cell: Wrong. This is the function of the nucleus.
• C. Provision of energy for cellular activities: Wrong. This is the job of the mitochondria, the site of aerobic respiration.
• D. Synthesis of secretory products: Partly tempting. The Golgi apparatus processes, packages, and secretes products. Ribosomes make the proteins, but "secretory products" is not their general defining function.
• E. Synthesis of proteins and enzymes: Correct. This is the main function of ribosomes.

Step 4: Answer

Tip: Match each organelle to its job:

• Nucleus: control center
• Mitochondria: powerhouse (energy)
• Ribosomes: protein factories
• Golgi apparatus: packaging and secretion
• Chloroplasts: photosynthesis

If you see "protein synthesis" in the options, think ribosomes right away.