Lecture 16 Vitamin B6 - MC

Question 1

What forms of Vitamin B6 are known as vitamers?
A) Pyridoxamine, Pyridoxal, and Pyridoxine
B) Pyridoxal phosphate, Pyridoxamine phosphate, Pyridoxine phosphate
C) Pyridoxal, Pyridoxamine, and Riboflavin
D) Pyridoxine, Riboflavin, and Thiamine

Answer 1

A

Question 2

What is the significance of phosphorylation in the forms of Vitamin B6?
A) It activates the vitamin to absorb better in the gut.
B) It converts the vitamers into their active enzyme cofactor forms.
C) It stabilizes the vitamin for longer shelf life.
D) It makes the vitamin soluble in water.

Answer 2

B

Question 3

*Why is Vitamin B6 sometimes referred to as the “protein vitamin”?
A) It is only found in protein-rich foods.
B) It primarily functions in the metabolism of fats and proteins.
C) It is necessary for amino acid metabolism and the synthesis of nonessential amino acids.
D) It is a component of muscle protein.

Answer 3

C

Question 4

*Vitamin B6 is essential for the synthesis of which of the following?
A) Vitamin C
B) Red blood cells
C) Fatty acids
D) Cholesterol

Answer 4

B

Question 5

What would likely happen in the absence of adequate Vitamin B6?
A) Non-essential amino acids can be synthesized without any dietary intake.
B) Non-essential amino acids would need to be obtained from the diet.
C) There would be an increased synthesis of essential amino acids.
D) There would be no impact on amino acid synthesis.

Answer 5

B