Question

Real-life example of endoplasmic reticulum (smooth and rough):

Select a real-life example of smooth and rough endoplasmic reticulum:

a) Smooth ER: Oil-producing cells; Rough ER: Muscle cells
b) Smooth ER: Bone cells; Rough ER: Nerve cells
c) Smooth ER: Blood cells; Rough ER: Skin cells

Answer 1

Rough endoplasmic reticulum (RER) has a rough appearance due to the presence of ribosomes, which make proteins. Smooth endoplasmic reticulum (SER) functions in lipid synthesis, calcium storage, and drug detoxification.

Step-by-step explanation:

Rough endoplasmic reticulum (RER) is studded with ribosomes, which gives it a "rough" appearance. These ribosomes make proteins that are then transported from the ER in small sacs called transport vesicles. The rough endoplasmic reticulum works with the Golgi apparatus to move new proteins to their proper destinations in the cell. The membrane of the RER is continuous with the outer layer of the nuclear envelope.

Smooth endoplasmic reticulum (SER) does not have any ribosomes attached to it, and so it has a smooth appearance. SER has many different functions, some of which include lipid synthesis, calcium ion storage, and drug detoxification. The smooth endoplasmic reticulum is found in both animal and plant cells.