GENERAL HISTOLOGY

Detailed explanation-1: -ribosome, particle that is present in large numbers in all living cells and serves as the site of protein synthesis. Ribosomes occur both as free particles in prokaryotic and eukaryotic cells and as particles attached to the membranes of the endoplasmic reticulum in eukaryotic cells.

Detailed explanation-2: -ribosome – A small grain-like structure in the cytoplasm of a cell where proteins are made. 10. Golgi body – A structure in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell.

Detailed explanation-3: -Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis-the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

Detailed explanation-4: -The proteins and nucleic acids that form the ribosome sub-units are made in the nucleolus and exported through nuclear pores into the cytoplasm.

Detailed explanation-5: -Ribosomes are called “protein factories” of the cell.