NUR01-E (VITAMINS EXAM LABORATORY)

Which of the following statements about vitamins is true?

• Vitamins can be synthesized by the body in adequate amounts

• Vitamins are not essential for growth and development

• Vitamins play a key role in metabolism and health

• Vitamins are inorganic compounds

In the experiment, what does the Betadine (Povidone-iodine) solution indicate?

• The presence of Vitamin C

• The presence of Vitamin A

• The pH level of the solution

• The presence of antioxidants

Which of the following would indicate the presence of Vitamin C in the solution during the experiment?

• No color change

• The solution turns clear or colorless

• The solution becomes red

• The solution turns yellow

Why is it important for vitamins to be obtained through food or supplements?

• Our body cannot store vitamins for long periods

• Our body cannot synthesize vitamins in sufficient amounts

• Vitamins are produced by gut bacteria

• Vitamins are unnecessary for metabolic processes

What would happen if there was a deficiency in Vitamin C?

• Impaired bone health and growth

• Increased susceptibility to infections and wound healing issues

• Poor vision and blindness

• Weight gain and reduced metabolism

What happens to Vitamin C when it is exposed to heat or light?

• It becomes more potent

• It gets destroyed or degraded

• It becomes more soluble

• It converts into Vitamin D

Which vitamin is essential for maintaining healthy skin and vision?

• Vitamin K

• Vitamin C

• Vitamin A

• Vitamin D

You are conducting an experiment to test the presence of Vitamin C in various sources. After adding iodine solution to the different juice samples (calamansi, orange, powdered orange juice, Vitamin C tablet, and Tetrapack juice), you observe that the iodine solution remains a dark yellow color in all but one cup. What does this indicate?

• The iodine solution has reacted with Vitamin C in the sample

• The sample contains no Vitamin C

• Vitamin C was added to the iodine solution

• All samples contain high levels of iodine

If the iodine solution does not change color after mixing with Tetrapack juice, what might this indicate?

• The Tetrapack juice does not contain sufficient Vitamin C

• The Tetrapack juice has a high level of Vitamin C

• The iodine solution was too diluted to react

• Tetrapack juice contains too much sugar for a reaction

Why are vitamins classified as essential nutrients?

• Because they are synthesized in the body

• Because they are needed in small quantities to maintain health

• Because they can be synthesized from other nutrients

• Because they provide energy to the body