Understanding Vitamins: Dietary Sources and Functions Quiz

Vitamins

• Vitamins A, D, E, and K are classified as fat-soluble vitamins.
• Vitamin A, D, and B12 undergo storage in the liver.
• Calcitriol is the active form of vitamin D.
• Vitamin D must be supplied in the diet, as it is not synthesized by the body.
• Vitamin C is commonly found in green leafy vegetables and citrus fruits.

Enzymes

• Transferases are the class of enzymes that catalyze the transfer of functional groups between molecules.
• The induced fit model describes conformational changes in the shape of the active site after binding of the substrate.
• Factors that can affect the rate of enzyme-catalyzed reactions include pH, temperature, substrate concentration, and enzyme concentration.
• Isoenzymes are enzymes that have different amino acid sequences but catalyze the same reaction.
• Plasma enzymes have clinical significance because they can be used as diagnostic tools to detect diseases, such as heart attacks or liver damage.

Test your knowledge about vitamins, their dietary sources, functions, and the differences between water and fat soluble vitamins. This quiz covers essential information for understanding the roles of different vitamins in the body.