Concept explainers
(a)
Interpretation: The validation of the pairing of retinal and Vitamin E has to be stated.
Concept introduction: Vitamin A in eyes is present as retinal, which combines with the opsin protein to aid in the vision. Vitamin E is obtained from vegetable oil, seeds and nuts. Vitamin E functions as an anti-oxidant in the human body.
(b)
Interpretation: The validation of the pairing of calciferol and vitamin D has to be stated.
Concept introduction: Vitamin D exists in several forms, vitamin
(c)
Interpretation: The validation of the pairing of tocopherol and vitamin K has to be stated.
Concept introduction: Vitamin K exists in different forms but all the forms have methylated napthoquinone structure. Some of the forms of Vitamin K are vitamin
(d)
Interpretation: The validation of the pairing of napthoquinone and vitamin A has to be stated.
Concept introduction: Vitamin A is a fat soluble vitamin. Vitamin A is found in eyes. It participates in the development of sperm. Vitamin K has napthoquinone structure to which the long side chain of carbon atoms is attached.
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Chapter 21 Solutions
General, Organic, and Biological Chemistry
- Identify each of the following vitamins as water-soluble or fat-soluble. a. tocopherolc. folic acid b. niacind. retinolarrow_forwardIndicate whether each of the following is a fat-soluble or a water-soluble vitamin. a. Vitamin K b. Vitamin B12 c. Vitamin C d. Thiaminarrow_forwardIndicate whether each of the following pairings of structure name and vitamin name is correct. a. retinal and vitamin E b. calciferol and vitamin D c. tocopherol and vitamin K d. napthoquinone and vitamin Aarrow_forward
- List four major functions of vitamin A in the human body.arrow_forwardIndicate whether each of the following is a fat-soluble or a water-soluble vitamin. a. Vitamin A b. Vitamin B6 c. Vitamin E d. Riboflavinarrow_forwardList the four major classes of biochemical compounds and their functions within the body.arrow_forward
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