Answer:
Vitamin C is one of the most important ingredient of skin as it play a key role in synthesis of collagen necessary for elasticity of skin.
Derivatives of vitamin C:
Following are derivatives of vitamin C used in medication for skin wrinkling and achne:
<span>1. Ascorbyl-6-palmitate
2. Magnesium ascorbyl phosphate
</span>
Derivatives of vitamin A:
There are four derivatives of vitamin A use in treating skin wrinkling, these are:
1.Retinol
2. Retinyl Palmitate
3. Retinaldehyde
3. Retinyl Retinoate
Eggs are being fertilized
Answer:
Cellulose is a macro molecule with high storage of energy lodged in its molecules.Therefore, this high energy content is a good advantage for Biofuel.
However, the mass e of the hydrogen bonds holding it molecules makes it difficult to undergo hydrolysis to glucose. This is a disadvantage which may affect the production of biofuel from cellulose.
Explanation:
Gas exchange of oxygen and carbon dioxide takes place in the alveoli . Oxygen from the inhaled air diffuses through the walls of the alveoli and adjacent capillaries into the red blood cells . The oxygen is then carried by the blood to the body tissues . They are surrounded by numerous capillaries
Answer:
contact inhibition.
Explanation:
This is how healthy cells know when to stop dividing. and a process called contact inhibition is when normal, healthy cells are touching other cells on all sides, they have a red light in the cell cycle and do not divide
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