NEET BIOLOGY

Detailed explanation-1: -The ribosome that is synthesizing the protein is directly attached to the ER membrane. These membrane-bound ribosomes coat the surface of the ER, creating regions termed rough endoplasmic reticulum, or rough ER (Figure 12-36A).

Detailed explanation-2: -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.

Detailed explanation-3: -Final Answer: Ribosomes are attached to the endoplasmic reticulum through a glycoprotein known as Ribophorin I and II.

Detailed explanation-4: -The ribosomes in the eukaryotic cell are composed of the 80S type, with two subunits 60S and 40S. The ribosomes are attached to the surface of the endoplasmic reticulum with the help of glycoproteins, ribophorin I and II. The larger subunit 60S attaches with these glycoproteins to form an attachment with the ER.

Detailed explanation-5: -Ribosomes are mainly found bound to the endoplasmic reticulum and the nuclear envelope, as well as freely scattered throughout the cytoplasm, depending upon whether the cell is plant, animal, or bacteria.