Describe the structures and functions of ribosomes. I need help on writing a short version of this
This site should help you.
http://www.biology4kids.com/files/cell_ribos.html
The ribosomes are cellular structures responsible for protein synthesis. They are composed of RNA molecules and proteins. Here's a simple way to describe their structures and functions:
Ribosomes are small, granular structures found in every cell. They exist either freely in the cytoplasm or bound to the endoplasmic reticulum.
Their structure consists of two subunits: a large subunit and a small subunit. The large subunit is responsible for catalyzing the formation of peptide bonds, joining amino acids together to form proteins. The small subunit plays a role in decoding the genetic information carried by messenger RNA (mRNA).
The function of ribosomes is to translate the genetic instructions from mRNA into the synthesis of proteins. They read the sequence of codons on the mRNA and match them with specific amino acids. This process occurs in three main steps: initiation, elongation, and termination. During initiation, the ribosome assembles around the mRNA. In elongation, the ribosome moves along the mRNA, linking amino acids together to form a growing polypeptide chain. Finally, in termination, the ribosome recognizes a stop codon, releases the completed protein, and disassembles.
In summary, ribosomes are important cellular structures that carry out protein synthesis. They consist of two subunits and play a crucial role in decoding the genetic information and catalyzing the formation of proteins.