Biology ยท General Awareness

Vitamins and Nutrition

1,711 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 nutrient is important for maintaining the health of the lens of the eye?

  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 important for maintaining the health of the lens of the eye, as it is involved in the production of collagen, a protein that gives the lens its shape and clarity.

Multiple choice

Which nutrient is associated with a reduced risk of retinoblastoma, a rare type of eye cancer that occurs in children?

  1. Vitamin E

  2. Zinc

  3. Lutein and zeaxanthin

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

Vitamin E is associated with a reduced risk of retinoblastoma, as it is an antioxidant that helps to protect the cells of the retina from damage.

Multiple choice

Which vitamin is predominantly found in the yolk of an egg?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Egg yolks are a rich source of Vitamin D, which is essential for bone health and immune function.

Multiple choice

What is the role of vitamins in cellular metabolism?

  1. Energy storage

  2. Genetic material

  3. Cofactors for enzymes

  4. Structural components of cells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamins are organic compounds that are required in small amounts for various metabolic processes. They often act as cofactors for enzymes, helping them to catalyze specific chemical reactions.

Multiple choice

Which cooking oil is a good source of vitamin E, an antioxidant that helps protect cells from damage?

  1. Sunflower oil

  2. Soybean oil

  3. Corn oil

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

Sunflower oil is a good source of vitamin E, an antioxidant that helps protect cells from damage caused by free radicals. It also contains omega-6 fatty acids, which are essential for overall health.

Multiple choice

Which of the following nutrients is found in coffee?

  1. Potassium

  2. Magnesium

  3. Vitamin B3 (niacin)

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

Coffee contains a number of nutrients, including potassium, magnesium, and vitamin B3 (niacin). These nutrients are essential for good health and may contribute to the potential health benefits of coffee consumption.

Multiple choice

Which of the following nutrients is particularly important for muscle recovery?

  1. Protein

  2. Carbohydrates

  3. Fats

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

Protein is particularly important for muscle recovery as it is essential for the repair and rebuilding of muscle tissue.

Multiple choice

Which fruit juice is known for its high content of vitamin C?

  1. Orange Juice

  2. Apple Juice

  3. Grapefruit Juice

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

Orange juice is an excellent source of vitamin C, an essential nutrient for immune function and skin health.

Multiple choice

Which of the following is NOT a macronutrient?

  1. Carbohydrates

  2. Proteins

  3. Fats

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

Carbohydrates, proteins, and fats are macronutrients, while vitamins are micronutrients.

Multiple choice

Which of the following is a good source of vitamin D?

  1. Fatty fish

  2. Eggs

  3. Mushrooms

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

Fatty fish, eggs, and mushrooms are all good sources of vitamin D.

Multiple choice

Which superfood is a good source of vitamin K?

  1. Kale

  2. Spinach

  3. Broccoli

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

Kale, spinach, and broccoli are all good sources of vitamin K, which is essential for blood clotting and bone health.

Multiple choice

Which vegetable is a rich source of vitamin C?

  1. Tomato

  2. Onion

  3. Cucumber

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

Spinach is an excellent source of vitamin C, which is essential for immune system health and collagen production.

Multiple choice

Which of the following fruits is known for its high levels of vitamin C?

  1. Oranges

  2. Grapefruits

  3. Lemons

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

Oranges, grapefruits, and lemons are all known for their high levels of vitamin C. Vitamin C is an essential nutrient that helps to boost the immune system, protect against infections, and promote healthy skin and bones.

Multiple choice

Which of the following supplements is commonly used to improve endurance performance?

  1. Caffeine

  2. Beta-Alanine

  3. Citrulline Malate

  4. L-Carnitine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Caffeine is a well-known stimulant that has been shown to enhance endurance performance by reducing fatigue and improving alertness.

Multiple choice

Which of the following supplements is commonly used to support immune function in athletes?

  1. Vitamin C

  2. Vitamin D

  3. Zinc

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

Vitamin C is an important nutrient that supports immune function and may help reduce the risk of infections in athletes.