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

What is the primary function of vitamin K in the body?

  1. Promoting blood clotting

  2. Supporting bone health

  3. Maintaining nerve function

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

Vitamin K's primary function is to promote blood clotting by helping to produce proteins involved in the coagulation process.

Multiple choice

Which of the following vitamins is typically found in significant amounts in sesame milk?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin C

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

Sesame milk is a good source of vitamin A, which is important for vision, immune function, and skin health.

Multiple choice

Which of the following is NOT a macronutrient essential for the human body?

  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 carbohydrates, proteins, and fats, which provide the body with energy and building blocks for growth and repair.

Multiple choice

What is the primary function of vitamin D in the body?

  1. Promoting bone health

  2. Boosting the immune system

  3. Regulating blood sugar levels

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

Vitamin D is essential for promoting bone health and preventing osteoporosis.

Multiple choice

Which of the following is NOT a macronutrient?

  1. Carbohydrates

  2. Proteins

  3. Vitamins

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

Carbohydrates, proteins, and fats are the three macronutrients that provide the body with energy and building blocks for growth and repair. Vitamins are micronutrients that are essential for various bodily functions, but they do not provide energy.

Multiple choice

Which vitamin is essential 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 essential for the production of prothrombin, a protein that is necessary for blood clotting. Without adequate vitamin K, blood clotting can be impaired.

Multiple choice

Rice milk is a good source of which of the following vitamins?

  1. Vitamin A

  2. Vitamin B12

  3. Vitamin D

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

Rice milk is fortified with vitamin D, which is important for bone health and immune function.

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 NOT a micronutrient?

  1. Vitamins

  2. Minerals

  3. Carbohydrates

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

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

Multiple choice

Which vitamin is essential for 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 essential for healthy vision, especially in low-light conditions.

Multiple choice

What are some common antioxidants used to prevent fruit juice spoilage?

  1. Vitamin C

  2. Vitamin E

  3. Beta-carotene

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

Several antioxidants are commonly used to prevent fruit juice spoilage, including vitamin C, vitamin E, and beta-carotene. Vitamin C is a water-soluble antioxidant that can inhibit the growth of microorganisms and enzymatic browning reactions. Vitamin E is a fat-soluble antioxidant that can inhibit lipid oxidation and non-enzymatic browning reactions. Beta-carotene is a carotenoid antioxidant that can inhibit enzymatic browning reactions and scavenge free radicals.

Multiple choice

Which nutrient is essential for the production of rhodopsin, the pigment responsible for vision in dim light?

  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, specifically in the form of retinol, is converted to retinal, which combines with opsin to form rhodopsin in the retina.

Multiple choice

Which nutrient is crucial for the proper functioning of the cornea, the transparent outer layer 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 essential for the synthesis of collagen, a protein that provides structural integrity to the cornea.

Multiple choice

Which eye condition is commonly associated with a deficiency of vitamin B1?

  1. Cataracts

  2. Glaucoma

  3. Macular degeneration

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

Vitamin B1 deficiency can lead to beriberi, a condition that affects multiple organ systems, including the eyes. Ocular manifestations of beriberi can include corneal ulcers, optic nerve atrophy, and nystagmus.

Multiple choice

What is the primary dietary source of vitamin A?

  1. Citrus fruits

  2. Leafy green vegetables

  3. Dairy products

  4. Meat and poultry
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leafy green vegetables, such as spinach, kale, and collard greens, are excellent sources of vitamin A in the form of beta-carotene, which is converted to retinol in the body.