OBJECTIVE FORESTRY

Detailed explanation-1: -Rough ER lies immediately adjacent to the cell nucleus, and its membrane is continuous with the outer membrane of the nuclear envelope.

Detailed explanation-2: -The endoplasmic reticulum (ER) is a structure found within the cytoplasm of eukaryotic cells. Its composition has two components: the smooth endoplasmic reticulum (SER) and the rough endoplasmic reticulum (RER).

Detailed explanation-3: -The endoplasmic reticulum (ER) is a network of membrane-enclosed tubules and sacs (cisternae) that extends from the nuclear membrane throughout the cytoplasm (Figure 9.1). The entire endoplasmic reticulum is enclosed by a continuous membrane and is the largest organelle of most eukaryotic cells.

Detailed explanation-4: -ROUGH ENDOPLASMIC RETICULUM Rough ER is found throughout the cell but the density is higher near the nucleus and the Golgi apparatus. Ribosomes on the rough endoplasmic reticulum are called ‘membrane bound’ and are responsible for the assembly of many proteins. This process is called translation.

Detailed explanation-5: -Ribosomes are another type of organelle that are made of ribosomal RNA and protein. Their main function in the cell is to produce protein. Ribosomes can be found in the cytosol or on the rough endoplasmic reticulum.