Which of the following is classified as a disaccharide?

• Glucose

• Fructose

• Sucrose

• Starch

The reducing property of a carbohydrate is due to the presence of a free or potentially free:

• Carboxyl group

• Hydroxyl group

• Carbonyl group (aldehyde or ketone)

• Phosphate group

Which of the following fat-soluble vitamins is involved in the visual cycle?

• Vitamin D

• Vitamin E

• Vitamin A (specifically, retinaldehyde)

• Vitamin K

Which of the following water-soluble vitamins participates as a coenzyme in decarboxylation reactions?

• Ascorbic acid (Vitamin C)

• Riboflavin (Vitamin B2)

• Thiamine (Vitamin B1, as thiamine pyrophosphate)

• Niacin (Vitamin B3, as NAD/NADP)

Which of the following minerals is a component of haemoglobin?

• Calcium

• Sodium

• Iron

• Zinc