How much do you know about Vitamin C?
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Questions and Answers

What is the role of vitamin C in collagen synthesis?

  • It acts as a substrate
  • It acts as a product
  • It acts as a catalyst
  • It acts as a reducing agent (correct)

Which of the following is NOT a source of vitamin C?

  • Potatoes
  • Lemons
  • Carrots (correct)
  • Strawberries

What happens when there is excess vitamin C in the body?

  • It is stored in the liver
  • It is excreted in the urine (correct)
  • It is converted into fat
  • It is broken down into glucose

What are the symptoms of a vitamin C deficiency?

<p>Fatigue, weakness, and joint pain (C)</p> Signup and view all the answers

What is scurvy?

<p>A vitamin C deficiency (C)</p> Signup and view all the answers

What is the active form of vitamin C?

<p>Hydro ascorbic acid (B)</p> Signup and view all the answers

What is the recommended daily intake of vitamin C?

<p>100-150 milligrams (C)</p> Signup and view all the answers

What is the role of vitamin C in the carnitine biosynthesis pathway?

<p>It acts as a substrate (D)</p> Signup and view all the answers

What is the primary function of vitamin C in the body?

<p>All of the above (B)</p> Signup and view all the answers

Which of the following is NOT a good source of vitamin C?

<p>Bananas (B)</p> Signup and view all the answers

What is scurvy?

<p>A vitamin C deficiency (D)</p> Signup and view all the answers

What is the active form of vitamin C?

<p>Dehydroascorbic acid (A)</p> Signup and view all the answers

What is the recommended daily intake of vitamin C?

<p>80 milligrams (B)</p> Signup and view all the answers

What are the symptoms of a vitamin C deficiency?

<p>All of the above (B)</p> Signup and view all the answers

What happens if you consume excess vitamin C?

<p>It is excreted in the urine (A)</p> Signup and view all the answers

Why is it important to consume vitamin C from dietary sources?

<p>To avoid a vitamin C deficiency (A)</p> Signup and view all the answers

What should faculty members use to log in to CygNET?

<p>NUHS computer/email username and password (without @nuhs.edu) (D)</p> Signup and view all the answers

How long may it take for enrollments to take effect on CygNET?

<p>Up to 24 hours (D)</p> Signup and view all the answers

Who should students contact if they are unable to see the courses they have registered for on CygNET?

<p>Registrar’s office (C)</p> Signup and view all the answers

What should students do if they are unable to see the courses they have registered for?

<p>Contact the registrar's office (A)</p> Signup and view all the answers

How should faculty members log in to CygNET?

<p>Using their NUHS computer/email username and password (D)</p> Signup and view all the answers

Will changing the password for My NU Student Portal or CAMS also change the password for CygNET for students?

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

Study Notes

Vitamin C: Sources, Metabolic Processes, Absorption, and Deficiency

  • Vitamin C, also known as ascorbic acid, is an essential water-soluble vitamin required for several processes in the body.
  • Vitamin C acts as a reducing agent in collagen synthesis, a cofactor for enzymes in the carnitine biosynthesis pathway, and a cofactor for enzymes in the catecholamine synthesis pathway.
  • Citrus fruits, tomatoes, strawberries, potatoes, Brussels sprouts, and broccoli are good sources of vitamin C.
  • A deficiency in vitamin C causes scurvy.
  • Vitamin C is required in collagen synthesis, catecholamine synthesis, and carnitine biosynthesis.
  • Vitamin C is actively absorbed in the small intestine and excess is degraded in the intestines.
  • Hydro ascorbic acid is also an active form of vitamin C.
  • Blood levels of ascorbic acid generally need to be above 80 milligrams per day for excess vitamin C to be excreted in the urine.
  • A vitamin C deficiency can cause symptoms such as fatigue, weakness, and muscle and joint pain.
  • A severe vitamin C deficiency can result in scurvy, which causes bleeding gums, skin rash, and joint pain.
  • Vitamin C supplements can lead to excess vitamin C being excreted in the urine.
  • It is important to consume a certain amount of vitamin C from dietary sources to avoid a deficiency.

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Test your knowledge on Vitamin C with our quiz! Learn about its sources, metabolic processes, absorption, and deficiency symptoms. Discover the importance of this essential water-soluble vitamin in collagen synthesis, catecholamine synthesis, and carnitine biosynthesis. Find out which foods are good sources of vitamin C and the consequences of a deficiency. Take the quiz and take the first step towards a healthier lifestyle!

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