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 vitamin is necessary for the formation of myelin, a protective sheath around nerve cells, and is found in meat, fish, and dairy products?

  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 necessary for the formation of myelin, a protective sheath around nerve cells, and is found in meat, fish, and dairy products. It is also essential for the production of red blood cells.

Multiple choice

Which vitamin is necessary for the formation of rhodopsin, a pigment in the retina of the eye that is responsible for vision in dim light, and is found in carrots, sweet potatoes, and spinach?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin C

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

Vitamin A is necessary for the formation of rhodopsin, a pigment in the retina of the eye that is responsible for vision in dim light, and is found in carrots, sweet potatoes, and spinach. It is also essential for maintaining healthy skin and mucous membranes.

Multiple choice

Which vitamin is necessary for the formation of coenzymes that are involved in various metabolic reactions, and is found in meat, poultry, and fish?

  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 necessary for the formation of coenzymes that are involved in various metabolic reactions, and is found in meat, poultry, and fish. It is also essential for the production of red blood cells.

Multiple choice

What is the primary nutrient found in cheese?

  1. Protein

  2. Carbohydrates

  3. Fats

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

Cheese is an excellent source of protein, providing essential amino acids for the body.

Multiple choice

Which vitamin is commonly found in cheese?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

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

Multiple choice

Which of the following is an example of a cofactor?

  1. Iron

  2. Magnesium

  3. Vitamin B12

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

Iron, magnesium, and vitamin B12 are all examples of cofactors that play crucial roles in enzyme activity.

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

Vitamins are micronutrients, not macronutrients. Macronutrients are nutrients required in large amounts by the body, while micronutrients are needed in smaller quantities.

Multiple choice

Which vitamin is essential for maintaining healthy vision?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Vitamin A is crucial for maintaining healthy vision, particularly night vision and the ability to distinguish colors.

Multiple choice

Which vitamin is crucial for preventing scurvy?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Vitamin C is essential for preventing scurvy, a disease caused by vitamin C deficiency, which can lead to bleeding gums, skin problems, and impaired wound healing.

Multiple choice

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

  1. Vitamin A

  2. Vitamin C

  3. Iron

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

Iron is essential for the production of red blood cells, which carry oxygen throughout the body.

Multiple choice

Which of the following vitamins is essential for maintaining healthy skin and protecting against air pollution damage?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Vitamin C is a powerful antioxidant that helps to neutralize free radicals and protect the skin from environmental damage, including air pollution.

Multiple choice

Which of the following skincare ingredients is known for its ability to protect the skin against air pollution damage?

  1. Retinol

  2. Hyaluronic acid

  3. Vitamin C

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

Vitamin C is a powerful antioxidant that helps to neutralize free radicals and protect the skin from environmental damage, including air pollution.

Multiple choice

Which vitamin is commonly enhanced through genetic engineering in rice?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Golden Rice, a genetically engineered rice variety, is known for its enhanced levels of beta-carotene, which the body converts into Vitamin A.

Multiple choice

Which vitamin is found in popcorn?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

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

Popcorn is a good source of vitamin E, an antioxidant that helps protect cells from damage.

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.