#1
Which of the following is a primary source of vitamin D?
#2
What is the main function of vitamin D in the body?
#3
Which of the following foods is a good dietary source of vitamin D?
#4
Which organ primarily synthesizes vitamin D in humans?
#5
What is the active form of vitamin D in the body?
#6
What is the name of the process by which the skin synthesizes vitamin D upon exposure to sunlight?
#7
Which of the following conditions can result from excessive vitamin D intake?
#8
Which form of ultraviolet (UV) radiation is responsible for the synthesis of vitamin D in the skin?
#9
Which of the following population groups is at a higher risk of vitamin D deficiency?
#10
Which condition is caused by a deficiency of vitamin D?
#11
What is the role of vitamin D in bone health?
#12
Which of the following vitamins works synergistically with vitamin D to regulate calcium levels in the body?
#13
In which cellular organelle does the conversion of vitamin D into its active form primarily occur?
#14
What is the maximum daily intake limit for vitamin D recommended by health authorities?
#15