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

List a few applications of starches in the food industry, List a few applic...

List a few applications of starches in the food industry. A few applications of starches in the foods industry include thickener, a fat sparing agent, adhesive, binder,

Why is maternal milk important for baby, Q. Why is maternal milk important ...

Q. Why is maternal milk important for the immune protection of the baby? Besides being nutritionally important like maternal milk participates in the defense of the baby agains

Limitations in the diagnostic use of stress echocardiography, Q. Limitation...

Q. Limitations in the Diagnostic use of Stress Echocardiography? Although the presence of coronary artery disease is readily recognised in the setting of multivessel disease, a

How do viruses enter plant body, a) How do viruses enter plant body and spr...

a) How do viruses enter plant body and spread to long distances within it? b) Mention any two ways by which viruses spread from single plant to another.

Define phospholipids, a) Lipoproteins are large molecular compounds that a...

a) Lipoproteins are large molecular compounds that are essential to the transport of cholesterol and triglycerides (TGs) within the blood. They contain a lipid core composed of TG

Self- vs. cross-pollination, Self- vs. Cross-Pollination A major adva...

Self- vs. Cross-Pollination A major advantage of self-pollination is its certainty. Continued self-pollination over many generations, however, results in weaker progeny. This

Determine the symptoms of campylobacteriosis, Determine the Symptoms of Cam...

Determine the Symptoms of Campylobacteriosis Symptoms:  C. jejuni infection causes diarrhoea, which may be watery or sticky and can contain blood and faecal  leukocytes (white

Determine the blood plasma levels of glucagon, Determine the blood plasma l...

Determine the blood plasma levels of glucagon A. production in the liver increases in response to an increase in blood plasma levels of glucagon. B. is secreted by alpha-isl

Peacock, exoskeleton of peacock

exoskeleton of peacock

Photosynthesis, why we add some sodium bicarbonate in water?

why we add some sodium bicarbonate in water?

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