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

Population density - biological stress, Population Density - Biological Str...

Population Density - Biological Stress You are aware of what might follow an uncontrolled growth of human population. There will be competition for common consumables and for

Pathophysiology of cardiac tamponade, Q. Pathophysiology of Cardiac tampona...

Q. Pathophysiology of Cardiac tamponade? Progressive increase in pericardial fluid results in progressive increase in intrapericardial pressure, till a critical volume is reach

What is tricuspid atresia: surgery for single ventricle, What is Tricuspid ...

What is Tricuspid Atresia: Surgery for Single Ventricle Physiology In tricuspid atresia, the right atrium fails to open into right ventricle through a right atrioventricular va

Respiration - metabolism of pollen tubes, Respiration - Metabolism of Polle...

Respiration - Metabolism of Pollen Tubes In the unpollinated pistils of Hippeastrum hybridum very high O 2 , tension exists from stigma down through most of the style. During

What do you mean by transgenic food, Q. What is transgenic food? The Tr...

Q. What is transgenic food? The Transgenic beings are animals, microorganisms and plants that contain recombinant DNA that is genes from other microorganisms, plants or animals

Biotechnology, Determine sequence weights for the sequences ACTA, ACTT, CGT...

Determine sequence weights for the sequences ACTA, ACTT, CGTT, and AGAT in problem 1 by using Thompson, Higgins, and Gibson method a) compute pairwise distances between sequences

Evolution of man, diffrentiate between javaman and peckingman

diffrentiate between javaman and peckingman

Define the thin and thick filaments of a sarcomere, When the overlap betwee...

When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing, A. the total length of the I band is increasing in the sarcomere. B.

SCINCE, I WANT JOB FOR TEACHING SCINCE SUBJECT FOR ONLINE

I WANT JOB FOR TEACHING SCINCE SUBJECT FOR ONLINE

Problem of polarity in regeneration in planarians, Problem of Polarity in R...

Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie

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