Podcast
Questions and Answers
Which type of vitamins are required in very small amounts and involved in fundamental functions in the body?
Which type of vitamins are required in very small amounts and involved in fundamental functions in the body?
- Provitamin-A carotenoids
- Vitamin A
- Fat soluble vitamins
- Water soluble vitamins (correct)
What is the storage form of Vitamin A?
What is the storage form of Vitamin A?
- Retinyl palmitate (correct)
- Vitamin A molecules
- Aldehyde form
- Retinoic acid
How is Vitamin A transported in the circulation for storage in the liver?
How is Vitamin A transported in the circulation for storage in the liver?
- Converted to retinyl palmitate
- Bound to retinoic acid
- Released as retinol bound to RBP (correct)
- Incorporated into chylomicrons
Which gene level mediator binds to target genes when activated by all-trans-retinoic acid (RA)?
Which gene level mediator binds to target genes when activated by all-trans-retinoic acid (RA)?
What enzyme is responsible for bio-converting provitamin-A carotenoids to Vitamin A molecules in the small intestine?
What enzyme is responsible for bio-converting provitamin-A carotenoids to Vitamin A molecules in the small intestine?
What is the most specific and characteristic early symptom of Vitamin A deficiency?
What is the most specific and characteristic early symptom of Vitamin A deficiency?
Which protein is involved in delivering retinol (Vitamin A) as well as thyroid hormone to tissues?
Which protein is involved in delivering retinol (Vitamin A) as well as thyroid hormone to tissues?
Which physiological activity is regulated by vitamin A's active form, retinoic acid, among the following?
Which physiological activity is regulated by vitamin A's active form, retinoic acid, among the following?
What is a common symptom associated with Vitamin A deficiency that affects vision?
What is a common symptom associated with Vitamin A deficiency that affects vision?
Which eye structure is specifically affected in Vitamin A deficiency, leading to blindness?
Which eye structure is specifically affected in Vitamin A deficiency, leading to blindness?
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