Types of endoplasmic reticulum, Biology

Assignment Help:

TYPES

E.R. consists of two types -        1. Rough E.R.                2. Smooth E.R.

 

Rough E.R.

 

Smooth E.R.

 

80s ribosomes bind by their larger subunit with the help of two glycoprotein which occur on surface of Rough E.R. i.e. Ribophorin I and II

More stable

Composed of cisternae and vesicles Abundantly occurs in cells which are actively engaged in protein synthesis e.g. liver, pancreas, Goblet cells.

 

Ribosomes and Ribophorins absent

 

 

 

 

Less stable

Composed of tubules.

Abundantly occur in cells concerned with glycogen and Lipid metabolism. e.g. Adipose tissue, Interstitial

cells, Muscles, Glycogen storing liver

cells, and adrenal cortex

Maximum number of Rough E.R. present in cells of (according to priority) -

(1) Fibroblast (whose function is fibre or protein synthesis)

(2) Plasma cell (whose function is to form antibodies which consists of protein)

(3) Pancreatic cell (form enzymes consists of proteins)

Maximum number of Smooth E.R. present in cell of (according to priority) -

(1) Interstitial cells (Leyding cells) - found in testis - functions is to secrete testosterone (male hormone, steroid nature) consists of lipids.

(2) Cells of adrenal cortex - synthesis steroid hormones. (3) Muscle fibre - glycogen (carbohydrate) synthesis.


Related Discussions:- Types of endoplasmic reticulum

Explain the occurrence of vitamin B1, Explain the Occurrence of Vitamin B 1...

Explain the Occurrence of Vitamin B 1 Vitamin B 1   occurs widely in the vegetable  kingdom. The richest sources for vitamin B 1 , as you may already know, are yeast, grain ge

Write the derivation of michaelis-menten model equation, 1. Briefly explain...

1. Briefly explain the dynamics in enzyme reaction mechanism with potential energy surface diagram. 2. How to find the rate constant of any enzymetic reaction? 3. Derivation

Identify the hormones produced by the anterior, Identify the hormones produ...

Identify the hormones produced by the anterior and posterior lobes of the pituitary gland and specify the functions of those hormones.

Isonzerization of glucose-6-phosphate, Isonzerization of glucose-6-phosphat...

Isonzerization of glucose-6-phosphate Isonzerization  of  glucose-6-phosphate :  This step  is  catalyzed  by phosphoglucoisomerase to  form  fructose-6-phosphate.

Briefly discuss the salmonella food infection, Briefly discuss the Salmonel...

Briefly discuss the Salmonella food infection. • Salmonella food infection is caused by Salmonella gastroenteritis. Transmitted by faecal contamination of foods. In

Which process is called "reverse osmosis", When water containing impurities...

When water containing impurities is forced against a filter that allows only water through, this process is called "reverse osmosis". Why is this a good description of what is happ

Show the properties of food, The food components are in the form of solids,...

The food components are in the form of solids, in solutions or in the form of colloids - sols or emulsions. The properties of these components determine the quality of food. The

What is the phenomenon of apical dominance in plants, What is the phenomeno...

What is the phenomenon of apical dominance in plants? How can it be artificially eliminated? Apical dominance is the phenomenon by which high (over the positive range limit) au

What is biochemical composition, What is Biochemical Composition As lif...

What is Biochemical Composition As life evolved on this planet, nature selected only a few elements, and life eventually came to be based essentially on carbon compounds. Out o

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd