EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Rough ER Contains
A
Detoxification
B
Carbohydrate Synthesizing machinery
C
Ribosomes
D
Lysosomes
Explanation: 

Detailed explanation-1: -The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins. Sometimes, when those proteins are made improperly, the proteins stay within the endoplasmic reticulum.

Detailed explanation-2: -[6] Ribosomes, along with their subunits, are a characteristic of the RER and can help identify it. However, these proteins are also found free-floating throughout the cytoplasm and other parts of the cell.

Detailed explanation-3: -Rough ER contains two integral membrane proteins, ribophorins I and II, that have molecular masses of 65 kDa and 63 kDa, respectively.

Detailed explanation-4: -ROUGH ENDOPLASMIC RETICULUM These are called membrane bound ribosomes and are firmly attached to the outer cytosolic side of the ER About 13 million ribosomes are present on the RER in the average liver cell. Rough ER is found throughout the cell but the density is higher near the nucleus and the Golgi apparatus.

Detailed explanation-5: -Smooth endoplasmic reticulum lacks ribosomes and helps synthesize and concentrate various substances needed by the cell.

There is 1 question to complete.