What is the primary function of ribosomes?

What is the primary function of ribosomes?

• A. To synthesize proteins
• B. To store genetic material
• C. To transport substances
• D. To break down waste

Answer: (A)

Ribosomes are the machines that translate genetic information into proteins. They read messenger RNA and join amino acids carried by transfer RNAs to form polypeptide chains, which fold into functional proteins. This translation process is essential because proteins carry out most cellular functions, from enzymes that drive metabolism to structural components and signaling molecules. In cells, ribosomes can be free in the cytosol, making proteins that function inside the cytoplasm, or attached to the rough endoplasmic reticulum, where they synthesize proteins destined for secretion or membranes. Structurally, eukaryotic ribosomes consist of two subunits (a larger and a smaller one) that come together to form the active ribosome, while prokaryotic ribosomes are slightly smaller. Storing genetic material is the job of DNA (and sometimes RNA in certain viruses), transport across membranes involves membrane proteins and vesicles, and breaking down waste is carried out by lysosomes (and related systems). The primary function of ribosomes is protein synthesis.

Ribosomes are the machines that translate genetic information into proteins. They read messenger RNA and join amino acids carried by transfer RNAs to form polypeptide chains, which fold into functional proteins. This translation process is essential because proteins carry out most cellular functions, from enzymes that drive metabolism to structural components and signaling molecules.

In cells, ribosomes can be free in the cytosol, making proteins that function inside the cytoplasm, or attached to the rough endoplasmic reticulum, where they synthesize proteins destined for secretion or membranes. Structurally, eukaryotic ribosomes consist of two subunits (a larger and a smaller one) that come together to form the active ribosome, while prokaryotic ribosomes are slightly smaller.

Storing genetic material is the job of DNA (and sometimes RNA in certain viruses), transport across membranes involves membrane proteins and vesicles, and breaking down waste is carried out by lysosomes (and related systems). The primary function of ribosomes is protein synthesis.