What are the main components of a ribosome?

What are the main components of a ribosome?

• A. RNA and proteins
• B. DNA and lipids
• C. RNA only
• D. Proteins only

Answer: (A)

Ribosomes are made from two types of molecules: ribosomal RNA and ribosomal proteins. The rRNA forms the core scaffold and actually helps catalyze peptide bond formation, while the ribosomal proteins stabilize the structure and assist in assembly and function. Together, they assemble into two subunits that come together on mRNA to translate the genetic code into a polypeptide. DNA and lipids don’t become part of ribosomes, and having only RNA or only proteins would miss essential components needed for proper ribosome activity.

Ribosomes are made from two types of molecules: ribosomal RNA and ribosomal proteins. The rRNA forms the core scaffold and actually helps catalyze peptide bond formation, while the ribosomal proteins stabilize the structure and assist in assembly and function. Together, they assemble into two subunits that come together on mRNA to translate the genetic code into a polypeptide. DNA and lipids don’t become part of ribosomes, and having only RNA or only proteins would miss essential components needed for proper ribosome activity.