Retinol and Pro-vitamin A Quiz

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Questions and Answers

What is the main metabolic function of retinol?

  • Bone growth
  • Muscle function
  • Immune function
  • Formation and integrity of epithelia and mucous membranes (correct)

Which of the following sources can contribute to retinol deficiency?

  • Cereal grains and meat (correct)
  • Liver (cod liver oil)
  • Milk fat
  • Egg yolk

What is the precursor for active retinol during absorption through the gut wall?

  • Vitamin C
  • Beta carotene (correct)
  • Vitamin E
  • Vitamin D

In which animals does the ability to convert beta carotene to active retinol vary with age, breed, and health?

<p>Young animals (D)</p> Signup and view all the answers

What are potential problems associated with retinol deficiency in cats?

<p>Foetal defects and infertility (B)</p> Signup and view all the answers

Which of the following can result from excess fish liver (oil) intake in dogs/cats?

<p>Abnormal bone deposition and lameness (D)</p> Signup and view all the answers

What is the primary source of vitamin D for most animals?

<p>Sunlight on skin (C)</p> Signup and view all the answers

What is the consequence of vitamin D deficiency in young growing animals?

<p>Weak, deformed bones (A)</p> Signup and view all the answers

Which vitamin is essential for protecting cells from oxidative damage caused by free radicals?

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

What is the primary source of Vitamin E in the diet of animals?

<p>Cereals high in barley (D)</p> Signup and view all the answers

Which vitamin is important for the normal clotting of blood, bone, and kidney function?

<p>Vitamin K (A)</p> Signup and view all the answers

What is the consequence of tocopherol (Vitamin E) deficiency in horses?

<p>Lameness and muscle stiffness (C)</p> Signup and view all the answers

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