Steroids, Biology

Assignment Help:

STEROIDS

  1. They are a group of tetracyclic lipid derivatives which have a nucleus of cyclopentano-perhydrophenanthrene with phenanthrene part made of 3 hexane rings while the fourth ring is a pentane.
  2. The most common sterol is cholesterol.
  3. Ergasterol occurs in cell membranes of ergot fungi, yeast.
  4. Coprosterol is found in stool. It is formed by bacterial reduction of cholesterol.
  5. Sitosterol present in wheat germ oil.
  6. Steroids are of two types -

(i) Alcoholic steroids (Sterol) - Cholesterol, Coprosterol, 7-dehydroxycholesterol, Bile salts

(ii) Ketonic steroids (Sterone) - Ecdyson, Diosgenin, Adrenocorticoids, Sex hormone


Related Discussions:- Steroids

How does the swim bladder of fishes work, Q. How does the swim bladder of f...

Q. How does the swim bladder of fishes work allowing fishes to control their depth under water? From Hydrostatics it is known that an object does not sink if its density is les

Signs and symptoms of emphysema, Pathophysiology Distension and damage...

Pathophysiology Distension and damage of the respiratory bronchioles selectively occur. Opening develops in the walls of the bronchioles. and they become enlarged and conf

What is the difference among sexual spores and gametes, What is the differe...

What is the difference among sexual spores and gametes? Do humans present sexual spores or gametes? Sexual spores are structures formed from meiosis with ploidy (number of chro

Bronchial asthma, Bronchial Asthma Bronchial Asthma is characterized ...

Bronchial Asthma Bronchial Asthma is characterized by increased responsiveness of the trachea and bronchi to various stimuli that cause narrowing of the airways and difficu

Llustrate the role of each area in the evolution of the hebe, llustrate the...

llustrate the role of each area in the evolution of the Hebe Uses appropriate examples from the Hebe data to illustrate the role of each area/concept in the evolution of the He

Illustrate the term - digestive caecum., Illustrate the term - Digestive ca...

Illustrate the term - Digestive caecum. A blind-ended pouch which extends from main digestive tract. Digestive ceca may be the sites for final digestion of ingested food or may

Parasympathetic discharge to the heart leads to, An enhance in parasympathe...

An enhance in parasympathetic discharge to the heart leads to A. An enhance in the conductance of F-channels in SA node cells. B. An enhance in the conductance of potassium

How age affects the bmr, How Age affects the BMR? The BMR per unit weig...

How Age affects the BMR? The BMR per unit weight also varies with age, being higher in children and lower in the elderly. The loss of FFM with ageing is associated with a decli

Water pollutants - water pollution, Water Pollutants - Water Pollution ...

Water Pollutants - Water Pollution Water pollution can occur on account of any one or more of the following agents: 1. Biological: Pathogens such as virus, bacteria,

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