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Question
Differentiate between rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER).
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Solution
a) Endoplasmic reticulum (ER) forms a continuous network
extending from the cell membrane to the nuclear membrane. In many parts
of the cell the endoplasmic reticulum is associated with ribosomes,
lying along the outer border of its membrane. They impart a rough
appearance and are known as rough ER. In some instances, the ER is not
associated with ribosomes and then it is said to be smooth endoplasmic
reticulum (SER).
b) The RER is concerned
with the transport of proteins which are made by ribosomes on its
surface. On the contrary, the SER plays an especially important role in
the synthesis and assembly of glycolipids.
a) Endoplasmic reticulum (ER) forms a continuous network
extending from the cell membrane to the nuclear membrane. In many parts
of the cell the endoplasmic reticulum is associated with ribosomes,
lying along the outer border of its membrane. They impart a rough
appearance and are known as rough ER. In some instances, the ER is not
associated with ribosomes and then it is said to be smooth endoplasmic
reticulum (SER).
b) The RER is concerned
with the transport of proteins which are made by ribosomes on its
surface. On the contrary, the SER plays an especially important role in
the synthesis and assembly of glycolipids.
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