Vitamin A For Acnt
Most of the times doctors will prescribe nutrition supplements to you and you might be given some vitamins. This quiz will help you find out how much you know about different types of vitamins and how they help you.
- 1.what two forms are vitamin A found in
- A.
Preformed vitamin A
- B.
Provitamin A
- C.
Reformed vitamin A
- D.
A & B
- 2.Provitamin A is found in
- A.
Animal origin
- B.
Plant foods
- C.
Neither
- 3.What are the three forms of vitamin A found in the body, mark all that apply
- A.
Retinal
- B.
Retinol
- C.
Retone
- D.
Retinoic acid
- E.
Retane
- 4.Which of these forms is involved in regulating growth and embryonic development
- A.
Retinoic acid
- B.
Retinol
- C.
Retinal
- 5.Which form is important for vision,
- A.
Retinol
- B.
Retinal
- C.
Retinoic acid
- 6.Which form is the major storage and transport form of vitamin A
- A.
Retinal
- B.
Retinol
- C.
Retinoic acid
- 7.What is needed to convert retinol to retinoic acid
- A.
Nothing happens automatically in the body
- B.
Rentinal is the intermediate in the conversion
- C.
An enzyme
- 8.Is the conversion of retinol to retinal a reversible reaction
- A.
Yes
- B.
NO
- 9.Where is most of vitamin A stored in the body
- A.
The liver
- B.
The Small Intestine
- C.
The brain
- 10.80-90% of CQ10 in the liver is stored in which cells
- A.
Hepatocytes
- B.
Stellate cells
- C.
Neither
- D.
Both
- 11.There is enough supply of vitamin A in the liver to last for
- A.
One week
- B.
One month
- C.
Several months
- D.
Several years
- 12.What is needed to hydrolyse retinyl esters in the small intesting to release retinol
- A.
HCI
- B.
Pancreatic lipase
- C.
Salivary lipase
- 13.How does rentinol travel to the liver
- A.
Via lymph
- B.
In chylomicrons
- C.
It is absorbed in small intestine
- 14.Thyroxine increases Vitamin A absorption
- A.
True
- B.
False
- 15.For retinol to be transported from the liver to other tissues it needs Rentinol binding proteins
- A.
True
- B.
False
- 16.What helps to absorb preformed Vitamin A, mark all that apply
- A.
Bile
- B.
Fat
- C.
Pancreatic secretions
- D.
HCI
- 17.Retinol binding protein is dependant upon which mineral for its production
- A.
Iron
- B.
Magnesium
- C.
Zinc
- D.
Copper
- 18.Vitamin A is excreted in which ways, mark all that apply
- A.
As carbon dioxide
- B.
In urine
- C.
In faeces
- D.
All of the above
- 19.50% of Vitamin A is kept in the body as stored primarily in ___
- A.
Adipose tissue
- B.
The liver
- C.
The brain
- 20.Protein is important to carotenoids being converted to vitamin A
- A.
True
- B.
False
- 21.Vitamin A is required for the absorption, storage and metabolism of which mineral
- A.
Zinc
- B.
Iron
- C.
Copper
- D.
Magnesium
- 22.What other vitamin protects vitamin A from oxidation in the gut, at storages sites and during transport
- A.
Vitamin E
- B.
Vitamin C
- C.
Vitamin D
- D.
Thiamin
- 23.Ingestion of mineral oils does what to Vitamin A
- A.
Increases absorption
- B.
Decreases absorption
- 24.An vitamin A deficiency also causes a reduction in Iron status
- A.
True
- B.
False
- 25.Vitamin A is required for the correct metabolism of which mineral
- A.
Maganese
- B.
Sodium
- C.
Calcium
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