Understanding Vitamins: Dietary Sources and Functions Quiz
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Understanding Vitamins: Dietary Sources and Functions Quiz

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.

Created by
@RicherParrot

Questions and Answers

Which vitamin is classified as a fat soluble vitamin?

Vitamin A

Which vitamin undergoes storage in the liver?

Vitamin D

Which form of vitamin D is the active form?

1,25dihydroxycholecalciferol

Which vitamin must be supplied in the diet?

<p>Vitamin E</p> Signup and view all the answers

Which vitamin is commonly found in green leafy vegetables and citrus fruits?

<p>Vitamin C</p> Signup and view all the answers

Which class of enzymes catalyze the transfer of functional groups between molecules?

<p>Transferases</p> Signup and view all the answers

Which model of the active site describes conformational changes in shape after binding of the substrate?

<p>Flexible model 'Induced fit model'</p> Signup and view all the answers

Which factor can affect the rate of enzyme-catalyzed reaction?

<p>pH and substrate concentration</p> Signup and view all the answers

What are isoenzymes?

<p>Enzymes with different structures but identical functions</p> Signup and view all the answers

Plasma enzymes have clinical significance because they...

<p>Can be used as markers for tissue damage or disease</p> Signup and view all the answers

Study Notes

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.

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