10 Questions
What are the two main groups that vitamins are classified into?
Fat-soluble and water-soluble vitamins
Which of the following is NOT a characteristic of fat-soluble vitamins?
Easily excreted through urine
What is the main difference between fat-soluble and water-soluble vitamins in terms of storage and excretion?
Fat-soluble vitamins can be stored in the liver, while water-soluble vitamins have no appreciable storage
What is the term used to describe the precursor forms of vitamins that are converted to active vitamins in the body?
Provitamins
Which of the following statements about the differences between fat-soluble and water-soluble vitamins is INCORRECT?
Water-soluble vitamins are more likely to be synthesized in the body, while fat-soluble vitamins must be obtained from the diet
What is the main function of vitamin A in the body?
To regulate gene expression
Which of the following is not a source of preformed vitamin A?
Carrot
What is the main difference between retinal and retinoic acid in the vitamin A metabolism?
Retinal is involved in vision, while retinoic acid is involved in gene regulation
Which of the following is a characteristic of fat-soluble vitamins?
Soluble in fat solvents
What is the primary cause of color blindness related to vitamin A?
Defective apoprotein production due to faulty genes
Learn about vitamins, essential organic molecules required in small amounts in the diet. Explore the classification of vitamins into fat-soluble and water-soluble groups, along with the conversion of provitamins to vitamins in the body.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
