Explain about vitamin D, Biology

Assignment Help:

Vitamin D (Calciferol - vitamin D2)

The main forms are Vitamin D2 (ergocalciferol-plant origin) and vitamin D3 (cholecalciferol-animal origin). Vitamin D2 forms colourless, acicular crystals or a crystalline powder without taste and of only faint odour. Vitamin D2 is easily soluble in either chloroform or benzene, ethanol, acetone and fatty oils and insoluble in water. Vitamin D2 is sensitive against atmospheric oxygen. It is not stable either in the presence of oxidizing substances and oxygen carriers. Moreover, vitamin D2 is destroyed by acids, metal ions as well as UV and visible light.

 


Related Discussions:- Explain about vitamin D

Autoregulation of coronary blood flow, The ability to maintain myocardial p...

The ability to maintain myocardial perfusion at constant levels in the face of changing driving presence is termed autoregulation. In normal cases, autoregulation is maintained at

Cell, compare and contrast plant cell and animal cell with labeling diagram...

compare and contrast plant cell and animal cell with labeling diagrams

Liquid manure handling, L iq uid manure handling This involves use of...

L iq uid manure handling This involves use of lot of water to flush the manure in to collection tank. Storage capacity depends on type of farm, irrigation facility, storage t

Determine the factors that affecting food choice, Determine the Factors tha...

Determine the Factors that Affecting Food Choice? As a dietician, it is necessary to understand how our food choices are affected. Every day we make food choices which influenc

Eye muscles, MUSCLES - In eye orbit, eye ball is fixed by 6 skeletal...

MUSCLES - In eye orbit, eye ball is fixed by 6 skeletal muscles attached to 3rd, 4th & 6th cranial nerves (motor). 4 - straight or recti muscles are present. 2 - oblique

Do we know what causes mental illnesses or how to treat them, Do we know wh...

Do we know what causes mental illnesses, or how best to treat them? Mental illnesses take various forms: debilitating sadness in depression; uncontrollable repetitive actions i

Uses of drugs, USES OF DRUGS - 1.       Drugs are prescribed as medicin...

USES OF DRUGS - 1.       Drugs are prescribed as medicines to prevent or cure a variety of diseases. 2.       May be used to promot physical and mental health. 3.       U

Spermiogenesis - spermatogenesis, Spermiogenesis - Spermatogenesis At ...

Spermiogenesis - Spermatogenesis At the end of the meiosis the spermatids appear as simple spherical cells with a centrally located nucleus. Their differentiation into sperm r

Is this the same thing as tonicity, These labs discuss the principle of osm...

These labs discuss the principle of osmolarity, which is defined as the total number of solute particles in 1 L of solution. Is this the same thing as tonicity? Explain your answer

Explain fontan operation, Explain Fontan Operation ? The original Font...

Explain Fontan Operation ? The original Fontan operation was done in a case where classical Glenn operation had been done (end-Lo-end anastomosis of superior vena cava and lig

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