Vit A

Question 1

Is vitamin A a fat soluble vitamin or water soluble?

Answer 1

Fat soluble!

Question 2

What are the types of vitamin A?

Answer 2

• Retinol
• Beta Carotene

Question 3

What is Retinol?

Answer 3

• Pure vitamin A
• Easily absorbed by the body (liver)

EG: Egg yolk, cheese, milk & butter.

Question 4

What is Beta Carotene?

Answer 4

• Pro vitamin A
• Not easily absorbed
• Must be changed into retinol (in the intestines) before it can be absorbed by the body.

EG: Carrots, pepper, spinach, & apples.

Question 5

What are the functions of Vitamin A?

Answer 5

• Makes Rhodopsin that allows the eye to adapt to dim lights.
• Strong hair & skin.
• Growth & development of children.
• Beta-carotene = powerful antioxidant that stops free radicals from damaging body parts.

Question 6

What are the deficiencies of Vitamin A?

Answer 6

• Night blindness: Eyes are unable to adjust to dim light & make out shapes in poorly lit areas.
• Eye infections: Cornea becomes dry & wrinkled.
• Rough, dry skin.

Question 7

What are the properties of vitamin A?

Answer 7

• Insoluble in water.
• Heat stable
• Drying causes serious loss.

Question 8

What is the RDA of vitamin A for adults?

Answer 8

700 ug

Question 9

What is the RDA of vitamin A for children?

Answer 9

500 ug