Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Vitamin A (Retinol)
Purified vitamin A is a viscous yellowish oil. It is freely soluble in most organic solvents such as methanol, ether, acetone, chloroform and petroleum ether as well as in fatty oils like olive, sesame and groundnut. However, Vitamin A is insoluble in water. It is highly susceptible to the action of atmospheric oxygen and oxygen carriers, further to oxidizing agents and metal ions. Vitamin A is also rapidly destroyed by UV light. Even in diffuse day light, the vitamin A conten of solutions is markedly reduced within a few hours. You must remember that vitamin A should be stored in a cool place, protected from light under vacuum or inert gas in air-tight containers or sealed ampules. You must understand that vitamin A itself is very unstable against external influences.
What are the main biological functions of water? Water is the basic solvent for chemical reactions of living beings; it is the major means of substance transportation in the ce
How do homeotic genes regulate development in Drosophila? Homeotic genes code for regulatory proteins that are thought to control the rate of cell division in various body area
Q. Symptoms of dyspepsia? The life style modification in terms of work schedules, eating behaviour like consuming meals when extremely tired, quitting alcohol and smoking would
Explain the role of Bones in human biology? Bone is covered by a tough outer membrane called the periosteum. The periosteum contains systems of capillaries that supply the bone
Sarcodine protozoans are amoebas, and there are two types of them: shelled and naked. As you examine the prepared slides you should be able to see water expulsion vesicle, nucleus,
Exposure assessment Estimates of dietary intakes of food additives, residues of pesticides and veterinary drugs and contaminants require information on the consumption of rele
What is mass transportation across the cell membrane? Mass transportation is the entrance or the exiting of substances in or from the cell engulfed by portions of membrane. The
Please show a diagram of the ATP molecule and label the major parts ot this molecule. Also, what kind of building block is ATP?
What is the OBJECTIVES of evaluation of patient clinical examination ? After going through this unit, you should be able to: 1. Carried out the general physics-examination; 2.
Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd