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9th Class Biology Chapter 8 MCQs with Answers

9th Class Biology Chapter 8 MCQs

Nutrition will be an important chapter for 9th-class biology students to learn the very basics of life. Nutrition MCQs will be ideal for checking your comprehension regarding how the living organisms derive and utilize the food, including nutrients, balanced diets, and digestive systems. Improve your knowledge with these interactive questions!

Which nutrient is the primary source of energy for the human body?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
c) Carbohydrate

What is the process by which the body breaks down food into smaller molecules for absorption?
a) Digestion
b) Metabolism
c) Assimilation
d) Absorption

Answer
a) Digestion

Which of the following is a fat-soluble vitamin?
a) Vitamin C
b) Vitamin B12
c) Vitamin D
d) Vitamin B6

Answer
c) Vitamin D

Which nutrient is essential for the growth and repair of tissues?
a) Protein
b) Carbohydrate
c) Fat
d) Fiber

Answer
a) Protein

The process of converting absorbed nutrients into energy and building blocks for the body is called:
a) Digestion
b) Metabolism
c) Absorption
d) Assimilation

Answer
b) Metabolism

Which of the following is a good source of complex carbohydrates?
a) White bread
b) Brown rice
c) Butter
d) Ice cream

Answer
b) Brown rice

Which of the following nutrients is responsible for building and repairing body tissues?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
a) Protein

What is the primary function of vitamins in the body?
a) Provide energy
b) Build muscles
c) Regulate body temperature
d) Facilitate chemical reactions

Answer
d) Facilitate chemical reactions

Which of the following vitamins is water-soluble?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
b) Vitamin C

Which nutrient is the most energy-dense, providing 9 calories per gram?
a) Protein
b) Fat
c) Carbohydrate
d) Fiber

Answer
b) Fat

Which of the following nutrients is a major component of cell membranes and hormones?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
b) Fat

Which of the following is a good source of vitamin C?
a) Oranges
b) Eggs
c) Milk
d) Nuts

Answer
a) Oranges

What is the process by which nutrients are taken from the digestive system into the bloodstream?
a) Digestion
b) Metabolism
c) Absorption
d) Assimilation

Answer
c) Absorption

Which nutrient is the body’s main source of quick energy?
a) Protein
b) Fat
c) Carbohydrate
d) Fiber

Answer
c) Carbohydrate

What is the primary function of minerals in the body?
a) Provide energy
b) Build muscles
c) Regulate body temperature
d) Aid in various physiological processes

Answer
d) Aid in various physiological processes

Which of the following vitamins is essential for proper blood clotting?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K

Answer
d) Vitamin K

Which of the following nutrients is an essential component of enzymes, hormones, and antibodies?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
a) Protein

What is the primary function of carbohydrates in the body?
a) Provide energy
b) Build muscles
c) Regulate body temperature
d) Facilitate chemical reactions

Answer
a) Provide energy

Which of the following is a good source of calcium?
a) Meat
b) Beans
c) Milk
d) Bread

Answer
c) Milk

Which nutrient is essential for the proper functioning of the nervous system and brain?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
b) Fat

Which of the following vitamins is essential for maintaining healthy vision and skin?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
a) Vitamin A

What is the primary function of proteins in the body?
a) Provide energy
b) Build muscles
c) Regulate body temperature
d) Act as enzymes and hormones

Answer
d) Act as enzymes and hormones

Which of the following nutrients is essential for maintaining healthy bones and teeth?
a) Protein
b) Fat
c) Carbohydrate
d) Calcium

Answer
d) Calcium

What is the primary function of fiber in the body?
a) Provide energy
b) Build muscles
c) Aid in digestion and prevent constipation
d) Facilitate chemical reactions

Answer
c) Aid in digestion and prevent constipation

Which of the following vitamins is essential for proper immune function?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
b) Vitamin C

Which nutrient is the body’s secondary source of energy, providing 4 calories per gram?
a) Protein
b) Fat
c) Carbohydrate
d) Fiber

Answer
a) Protein

What is the primary function of water in the body?
a) Provide energy
b) Build muscles
c) Regulate body temperature
d) Facilitate chemical reactions

Answer
c) Regulate body temperature

Which of the following vitamins is essential for the absorption of calcium and phosphorus?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
c) Vitamin D

Which nutrient is essential for proper brain function and cognitive development?
a) Protein
b) Fat
c) Carbohydrate
d) Iron

Answer
b) Fat

What is the primary function of iron in the body?
a) Provide energy
b) Build muscles
c) Aid in oxygen transport
d) Facilitate chemical reactions

Answer
c) Aid in oxygen transport

Which of the following nutrients is essential for the formation and repair of red blood cells?
a) Protein
b) Fat
c) Carbohydrate
d) Iron

Answer
d) Iron

What is the primary function of antioxidants in the body?
a) Provide energy
b) Build muscles
c) Neutralize harmful free radicals
d) Facilitate chemical reactions

Answer
c) Neutralize harmful free radicals

Which of the following vitamins is essential for proper nerve function and the synthesis of
DNA?
a) Vitamin A
b) Vitamin C
c) Vitamin B12
d) Vitamin K

Answer
c) Vitamin B12

Which nutrient is essential for the proper functioning of the immune system and wound healing?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin C

Answer
d) Vitamin C

What is the primary function of phosphorus in the body?
a) Provide energy
b) Build muscles
c) Aid in bone and teeth formation
d) Facilitate chemical reactions

Answer
c) Aid in bone and teeth formation

Which of the following nutrients is essential for maintaining healthy skin and vision?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin A

Answer
d) Vitamin A

What is the primary function of zinc in the body?
a) Provide energy
b) Build muscles
c) Aid in enzyme function and immune system health
d) Facilitate chemical reactions

Answer
c) Aid in enzyme function and immune system health

Which of the following vitamins is essential for the absorption of calcium and phosphorus?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
c) Vitamin D

Which nutrient is essential for the proper functioning of the nervous system and brain?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin

Answer
b) Fat

What is the primary function of iron in the body?
a) Provide energy
b) Build muscles
c) Aid in oxygen transport
d) Facilitate chemical reactions

Answer
c) Aid in oxygen transport

Which of the following nutrients is essential for proper brain function and cognitive development?
a) Protein
b) Fat
c) Carbohydrate
d) Iron

Answer
b) Fat

What is the primary function of antioxidants in the body?
a) Provide energy
b) Build muscles
c) Neutralize harmful free radicals
d) Facilitate chemical reactions

Answer
c) Neutralize harmful free radicals

Which of the following vitamins is essential for proper nerve function and the synthesis of
DNA?
a) Vitamin A
b) Vitamin C
c) Vitamin B12
d) Vitamin K

Answer
c) Vitamin B12

Which nutrient is essential for the proper functioning of the immune system and wound healing?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin C

Answer
d) Vitamin C

What is the primary function of phosphorus in the body?
a) Provide energy
b) Build muscles
c) Aid in bone and teeth formation
d) Facilitate chemical reactions

Answer
c) Aid in bone and teeth formation

Which of the following nutrients is essential for maintaining healthy skin and vision?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin A

Answer
d) Vitamin A

What is the primary function of zinc in the body?
a) Provide energy
b) Build muscles
c) Aid in enzyme function and immune system health
d) Facilitate chemical reactions

Answer
c) Aid in enzyme function and immune system health

Which of the following vitamins is essential for the formation and repair of red blood cells?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K

Answer
d) Vitamin K

Which nutrient is essential for proper brain development during pregnancy and infancy?
a) Protein
b) Fat
c) Carbohydrate
d) Folate

Answer
d) Folate

What is the primary function of iodine in the body?
a) Provide energy
b) Build muscles
c) Aid in thyroid hormone synthesis
d) Facilitate chemical reactions

Answer
c) Aid in thyroid hormone synthesis

Which of the following nutrients is essential for maintaining healthy bones and teeth?
a) Protein
b) Fat
c) Carbohydrate
d) Calcium

Answer
d) Calcium

What is the primary function of magnesium in the body?
a) Provide energy
b) Build muscles
c) Aid in enzyme function and muscle contractions
d) Facilitate chemical reactions

Answer
c) Aid in enzyme function and muscle contractions

Which of the following vitamins is essential for proper blood clotting?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K

Answer
d) Vitamin K

What is the primary function of potassium in the body?
a) Provide energy
b) Build muscles
c) Aid in nerve function and fluid balance
d) Facilitate chemical reactions

Answer
c) Aid in nerve function and fluid balance

Which of the following nutrients is essential for proper brain function and memory?
a) Protein
b) Fat
c) Carbohydrate
d) Omega-3 fatty acids

Answer
d) Omega-3 fatty acids

What is the primary function of selenium in the body?
a) Provide energy
b) Build muscles
c) Act as an antioxidant and support immune function
d) Facilitate chemical reactions

Answer
c) Act as an antioxidant and support immune function

Which of the following vitamins is essential for proper immune function?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E

Answer
b) Vitamin C

What is the primary function of sodium in the body?
a) Provide energy
b) Build muscles
c) Aid in nerve function and fluid balance
d) Facilitate chemical reactions

Answer
c) Aid in nerve function and fluid balance

Which of the following nutrients is essential for the proper functioning of the thyroid gland?
a) Protein
b) Fat
c) Carbohydrate
d) Iodine

Answer
d) Iodine

What is the primary function of vitamin E in the body?
a) Provide energy
b) Build muscles
c) Act as an antioxidant and protect cell membranes
d) Facilitate chemical reactions

Answer
c) Act as an antioxidant and protect cell membranes

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See Also  9th Class Biology MCQs Test Preparation
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