Question 26

Differentiate between Rough Endoplasmic Reticulum (RER) and Smooth Endoplasmic Reticulum (SER).

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Solution

Difference between Rough Endoplasmic Reticulum (RER) and Smooth Endoplasmic Reti culum (SER) are as below.

$\begin{matrix} R E R & S E R (Rough Endoplasmic Reticulum) & (Smooth Endoplasmic Reticulum) 1. R E R p o s s e s s e s r i b o s o m e s a t t a c h e d t o i t s & S E R d o e s n o t b e a r r i b s o m e s a t t a c h t o s u r f a c e . & t h e i r s u r f a c e . 2. M a i n l y f o r m e d o f c i s t e r n a e a n d f e w & M a i n l y f o r m e d o f v e s i c l e s a n d t h e t u b u l e s . t u b u l e s . 3. R E R t a k e s p a r t i n t h e s y n t h e s i s o f p r o t e i n s & S E R t a k e s p a r t i n t h e s y n t h e s i s o f g l y c o g e n, a n d e n z y m e s . & l i p i d s a n d s t e r i o d s . 4. R E R i s i n t e r n a l a n d c o n n e c t e d w i t h n u c l e a r & S E R i s p e r i p h e r a l . i t m a y b e c o n n e c t e d e n v e l o p e . & w i t h p l a s m a l e m m a . 5. I t m a y d e v e l o p f r o m t h e n u c l e a r e n v e l o p e . & I t m a y d e v e l o p f r o m R E R . 6. E n z y m e s f o r d e t o x o f i c a t i o n a r e a b s e n t i n & I t h a s t h e e n z y m e s f o r d e t o x o f i c a t i o n . R E R 7. I t f o r m s l y s o s o m e s t h r o u g h t h e a g e n c y o f & S E R g i v e s r i s e t o s p h a e r o s o m e s . G o l g i a p p a r a t u s . \end{matrix}$

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Question 8

Which of the following statement is true for a secretory cell?

(a) Golgi apparatus is absent

(b) Rough Endoplasmic Reticulum (RER) is easily observed in the cell.

(d) Secretory granules are formed in nucleus.

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