Biology ยท General Awareness

Vitamins and Nutrition

1,549 Questions

Review essential concepts of human nutrition, focusing on macro and micronutrients. The questions cover vitamin deficiencies, sources, and their physiological roles such as blood clotting and vision. This material is highly relevant for the general science section of various government exams.

Vitamin sources and functionsMacronutrients for energyBlood coagulation vitaminsDeficiency diseasesNutrient absorption mechanisms

Vitamins and Nutrition Questions

Multiple choice

Which of the following dietary factors can increase the risk of bleeding in patients taking warfarin?

  1. High intake of vitamin K

  2. High intake of vitamin C

  3. High intake of iron

  4. High intake of alcohol
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Alcohol can interfere with the metabolism of warfarin and increase the risk of bleeding.

Multiple choice

Which of the following nutrients can interfere with the metabolism of phenytoin?

  1. Vitamin D

  2. Vitamin C

  3. Folic acid

  4. All of the above
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Vitamin D, vitamin C, and folic acid can all interfere with the metabolism of phenytoin. Vitamin D can increase the metabolism of phenytoin, while vitamin C and folic acid can decrease the metabolism of phenytoin.

Multiple choice

Which of the following dietary factors can increase the risk of bone loss in patients taking glucocorticoids?

  1. High intake of calcium

  2. High intake of vitamin D

  3. High intake of protein

  4. High intake of alcohol
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Alcohol can interfere with the metabolism of glucocorticoids and increase the risk of bone loss.

Multiple choice

Which of the following nutrients can interfere with the metabolism of methotrexate?

  1. Folic acid

  2. Vitamin B12

  3. Iron

  4. Calcium
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Folic acid is a cofactor for the enzyme that converts methotrexate to its inactive form. Therefore, high intake of folic acid can decrease the effectiveness of methotrexate.

Multiple choice

Which of the following drugs can interfere with the absorption of vitamin A?

  1. Mineral oil

  2. Orlistat

  3. Cholestyramine

  4. All of the above
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Mineral oil, orlistat, and cholestyramine can all interfere with the absorption of vitamin A. Mineral oil can prevent the absorption of vitamin A in the small intestine, while orlistat and cholestyramine can bind to vitamin A and prevent its absorption.

Multiple choice

Which vitamin is most abundant in eggs?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

  4. Vitamin E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Eggs are a good source of vitamin D, which is important for bone health and immune function.

Multiple choice

Which vitamin is responsible for blood clotting?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin K

  4. Vitamin D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin K is responsible for the production of prothrombin, a protein necessary for blood clotting.

Multiple choice

Which nutrient is responsible for building and repairing tissues?

  1. Protein

  2. Carbohydrates

  3. Fats

  4. Vitamins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Protein is responsible for building and repairing tissues.

Multiple choice

Which nutrient is responsible for providing energy to the body?

  1. Protein

  2. Carbohydrates

  3. Fats

  4. Vitamins
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbohydrates are responsible for providing energy to the body.

Multiple choice

Which of these fruits is a good source of vitamin C?

  1. Apple

  2. Orange

  3. Banana

  4. Grape
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Oranges are an excellent source of vitamin C, which is important for immune system health and collagen production.

Multiple choice

Which vitamin is essential for the absorption of calcium?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin C

  4. Vitamin D
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin D is essential for the absorption of calcium from the small intestine. It helps to maintain normal blood calcium levels and promotes bone health.

Multiple choice

Which vitamin is essential for the production of red blood cells?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin C

  4. Vitamin D
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin B12 is essential for the production of red blood cells and the synthesis of DNA.

Multiple choice

Which vitamin is essential for the absorption of iron?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin C

  4. Vitamin D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin C is essential for the absorption of iron from the small intestine.

Multiple choice

Which egg component is responsible for the characteristic yellow color of egg yolks?

  1. Carotenoids

  2. Riboflavin

  3. Thiamin

  4. Vitamin D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carotenoids, particularly lutein and zeaxanthin, are responsible for the characteristic yellow color of egg yolks.

Multiple choice

Which macronutrient is primarily responsible for providing energy during high-intensity exercise?

  1. Protein

  2. Carbohydrates

  3. Fats

  4. Vitamins
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbohydrates are the body's primary source of energy during high-intensity exercise. They are broken down into glucose, which is then used by muscles for fuel.