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

Pre-mating isolating mechanisms, We mentioned earlier that pre-mating mecha...

We mentioned earlier that pre-mating mechanisms are concerned with the prevention of occurrence of interspecific crosses. In such cases, a) the potential mates do not meet in wh

Specify the term in detail - swim bladder, Specify the term in detail - Swi...

Specify the term in detail - Swim bladder. Found in bony fish, this gas-filled chamber is used to main neutral buoyancy. Oxygen in blood is added or removed as required. Swim b

What is the meaning of ideometric approach, What is the meaning of Ideometr...

What is the meaning of Ideometric approach Ideometric approach in the context of neuropsychological assessment emphasises the patient's premorbid functioning with reference to

Pathophysiology of bronchial asthma, Pathophysiology Asthma result fro...

Pathophysiology Asthma result from several physiological alterations, including altered immunologic response, increased airways resistance, increased lung-compliance, impaire

How can we control the disease cholera, How can we control the disease Chol...

How can we control the disease Cholera Control: Individuals infected  with cholera require oral rehydration therapy  with NaCl plus sucrose, sodium bicarbonate and potassium ch

Chronic mitral regurgitation-mitral regurgitation, Chronic Mitral Regurgita...

Chronic Mitral Regurgitation Chronic mitral regurgitation may have different aetiological factors: 1) Rheumatic 2) Degenerative-myxomatous malformation 3) Infective

Cow-pox (vaccinia), C o w - po x (vaccinia) E p ide...

C o w - po x (vaccinia) E p idemiology: This infection, although mostly occurring in cows, sometimes also occurs in buffaloes. Under natural conditions, t

What is short bowel syndrome, Q. What is Short Bowel Syndrome? Short bo...

Q. What is Short Bowel Syndrome? Short bowel syndrome is a group of problems affecting people who have /had half or more of their small intestine removed. The massive resection

Parts, How many parts of human body?

How many parts of human body?

Explain about the energy requirements in elderly, Explain about the Energy ...

Explain about the Energy Requirements in elderly? Based on the Benedict - Harris equation for men and women, the daily energy requirements can be calculated. For Men: 66 t

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