Which of the following vitamins can be toxic if consumed in large ...

[EY67]

Which of the following vitamins can be toxic if consumed in large amounts?
 
  1. Niacin
  2. Vitamin C
  3. Vitamin A
  4. Folic acid

Question 2

An important function of vitamin A is to
 
  1. promote visual pigment of the eye.
  2. act as an antioxidant.
  3. help with the clotting of blood.
  4. help with bile excretion.

[AaaA]

Answer to Question 1

Correct Answer: 3
Rationale 1: Niacin is vitamin B, and therefore water-soluble.
Rationale 2: Vitamin C is a water-soluble vitamin, and cannot be toxic.
Rationale 3: Vitamin A is lipid-soluble, and can be toxic in large amounts.
Rationale 4: Folic acid is a B vitamin, and is water-soluble.

Answer to Question 2

Correct Answer: 1
Rationale 1: Vitamin A is needed for precursor retinol for normal vision.
Rationale 2: Vitamin C and E are antioxidants.
Rationale 3: Vitamin K is important in the clotting of blood.
Rationale 4: Vitamin B can help with metabolic processes.

[EY67]

Thank you!

[AaaA]

Always glad to help...