essay on ribosomes this for 5 mark question please keep a 10 lines answer
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Answer:
Explanation:
Ribosomes are also known as protein factories in our body. they are memberanless structures . they are of different types depending upon their density. A ribosome is made from complexes of RNAs and proteins and is therefore a ribonucleoprotein complex. Each ribosome is divided into two subunits: a smaller subunit which binds to a larger subunit and the mRNA, and. a larger subunit which binds to the aminoacylated tRNAs and the smaller subunit.Ribosomes are found 'free' in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER. In a mammalian cell there can be as many as 10 million ribosomes. Several ribosomes can be attached to the same mRNA strand, this structure is called a polysome. Eukaryote ribosomes are produced and assembled in the nucleolus. Ribosomal proteins enter the nucleolus and combine with the four rRNA strands to create the two ribosomal subunits (one small and one large) that will make up the completed ribosome