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Digestive System and Nutrition Online MCQs with Answers
The process of breaking down food into smaller molecules is known as:
a) Absorption
b) Digestion
c) Elimination
d) Metabolism
Which of the following is the primary organ responsible for digestion and nutrient absorption?
a) Stomach
b) Liver
c) Small intestine
d) Large intestine
What is the function of enzymes in the digestive system?
a) To transport nutrients to body cells
b) To break down carbohydrates, proteins, and fats
c) To store bile for digestion
d) To absorb water and electrolytes
The process of eliminating undigested waste material from the body is known as:
a) Absorption
b) Digestion
c) Elimination
d) Metabolism
Which of the following is a function of the stomach in the digestive system?
a) Nutrient absorption
b) Bile production
c) Food storage and mechanical digestion
d) Water reabsorption
The liver plays a crucial role in digestion by:
a) Producing bile to emulsify fats
b) Absorbing nutrients from the small intestine
c) Breaking down proteins into amino acids
d) Regulating blood sugar levels
What is the function of the gallbladder in the digestive system?
a) Production of digestive enzymes
b) Absorption of nutrients
c) Storage and concentration of bile
d) Reabsorption of water and electrolytes
Which of the following is the main function of the small intestine in the digestive system?
a) Mechanical digestion of food
b) Storage of bile
c) Absorption of nutrients
d) Elimination of waste material
The process of breaking down complex carbohydrates into simple sugars is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
Which of the following is the main function of the large intestine in the digestive system?
a) Nutrient absorption
b) Water reabsorption and formation of feces
c) Bile production
d) Mechanical digestion of food
The process of breaking down proteins into amino acids is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
What is the function of the pancreas in the digestive system?
a) Production of bile
b) Absorption of nutrients
c) Storage of digestive enzymes
d) Secretion of digestive enzymes and hormones
The process of breaking down fats into fatty acids and glycerol is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
Which of the following is an example of a fat-soluble vitamin?
a) Vitamin C
b) Vitamin B12
c) Vitamin D
d) Vitamin K
The process of breaking down complex nutrients into smaller molecules that can be absorbed by the body is known as:
a) Ingestion
b) Digestion
c) Assimilation
d) Elimination
What is the function of fiber in the diet?
a) Provides essential nutrients
b) Aids in the digestion and elimination of waste
c) Increases energy levels
d) Promotes the absorption of water in the body
Which of the following is the primary function of carbohydrates in the body?
a) Provide energy
b) Build and repair tissues
c) Support immune function
d) Aid in digestion
The process of breaking down food into smaller particles by chewing and mixing with saliva is known as:
a) Ingestion
b) Absorption
c) Peristalsis
d) Mastication
Which of the following is an example of a micronutrient?
a) Carbohydrates
b) Proteins
c) Fats
d) Vitamins
The process of nutrient uptake and utilization by the body’s cells is known as:
a) Digestion
b) Assimilation
c) Absorption
d) Metabolism
Which of the following is an example of a water-soluble vitamin?
a) Vitamin A
b) Vitamin D
c) Vitamin C
d) Vitamin E
What is the primary function of proteins in the body?
a) Provide energy
b) Maintain and repair tissues
c) Aid in digestion
d) Support immune function
The process of breaking down complex nutrients into simpler molecules that can be absorbed by the body is known as:
a) Metabolism
b) Digestion
c) Assimilation
d) Elimination
Which of the following is the primary site of nutrient absorption in the digestive system?
a) Stomach
b) Liver
c) Small intestine
d) Large intestine
What is the function of hydrochloric acid in the stomach?
a) Break down carbohydrates
b) Break down proteins
c) Break down fats
d) Absorb water and electrolytes
Which of the following is an example of an essential nutrient?
a) Sodium
b) Cholesterol
c) Fiber
d) Caffeine
The process of moving food through the digestive system via rhythmic muscle contractions is known as:
a) Absorption
b) Digestion
c) Elimination
d) Peristalsis
Which of the following is the primary function of fats in the body?
a) Provide energy
b) Build and repair tissues
c) Support immune function
d) Aid in digestion
What is the function of mucus in the digestive system?
a) Break down nutrients
b) Absorb water and electrolytes
c) Protect the lining of the digestive tract
d) Aid in the production of bile
The process of converting food into energy and building blocks for the body is known as:
a) Digestion
b) Assimilation
c) Absorption
d) Metabolism
Which of the following is an example of a complex carbohydrate?
a) Glucose
b) Fructose
c) Sucrose
d) Starch
What is the purpose of the esophagus in the digestive system?
a) Produce digestive enzymes
b) Absorb nutrients
c) Store bile
d) Transport food from the mouth to the stomach
The process of breaking down carbohydrates into glucose is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
Which of the following is the primary function of vitamins in the body?
a) Provide energy
b) Build and repair tissues
c) Support immune function
d) Aid in digestion
The process of breaking down food into smaller molecules through the action of enzymes is known as:
a) Assimilation
b) Absorption
c) Digestion
d) Elimination
What is the function of bile in the digestive system?
a) Break down proteins
b) Break down fats
c) Break down carbohydrates
d) Absorb water and electrolytes
Which of the following is an example of a water-soluble nutrient?
a) Vitamin A
b) Calcium
c) Iron
d) Vitamin C
What is the function of the salivary glands in the digestive system?
a) Produce digestive enzymes
b) Absorb nutrients
c) Store bile
d) Transport food from the mouth to the stomach
Which of the following is an example of a micronutrient?
a) Carbohydrates
b) Proteins
c) Fats
d) Vitamins
The process of breaking down fats into fatty acids and glycerol is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
What is the function of hydrochloric acid in the stomach?
a) Break down carbohydrates
b) Break down proteins
c) Break down fats
d) Absorb water and electrolytes
The process of moving food through the digestive system via rhythmic muscle contractions is known as:
a) Absorption
b) Digestion
c) Elimination
d) Peristalsis
Which of the following is the primary site of nutrient absorption in the digestive system?
a) Stomach
b) Liver
c) Small intestine
d) Large intestine
What is the function of mucus in the digestive system?
a) Break down nutrients
b) Absorb water and electrolytes
c) Protect the lining of the digestive tract
d) Aid in the production of bile
The process of converting food into energy and building blocks for the body is known as:
a) Digestion
b) Assimilation
c) Absorption
d) Metabolism
Which of the following is an example of a complex carbohydrate?
a) Glucose
b) Fructose
c) Sucrose
d) Starch
What is the purpose of the esophagus in the digestive system?
a) Produce digestive enzymes
b) Absorb nutrients
c) Store bile
d) Transport food from the mouth to the stomach
The process of breaking down carbohydrates into glucose is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
What is the function of bile in the digestive system?
a) Break down proteins
b) Break down fats
c) Break down carbohydrates
d) Absorb water and electrolytes
Which of the following is an example of a water-soluble nutrient?
a) Vitamin A
b) Calcium
c) Iron
d) Vitamin C
What is the function of the salivary glands in the digestive system?
a) Produce digestive enzymes
b) Absorb nutrients
c) Store bile
d) Transport food from the mouth to the stomach
Which of the following is an example of a micronutrient?
a) Carbohydrates
b) Proteins
c) Fats
d) Vitamins
The process of breaking down fats into fatty acids and glycerol is known as:
a) Proteolysis
b) Glycolysis
c) Lipolysis
d) Amylolyis
What is the function of hydrochloric acid in the stomach?
a) Break down carbohydrates
b) Break down proteins
c) Break down fats
d) Absorb water and electrolytes
The process of moving food through the digestive system via rhythmic muscle contractions is known as:
a) Absorption
b) Digestion
c) Elimination
d) Peristalsis
Which of the following is the primary site of nutrient absorption in the digestive system?
a) Stomach
b) Liver
c) Small intestine
d) Large intestine
What is the function of mucus in the digestive system?
a) Break down nutrients
b) Absorb water and electrolytes
c) Protect the lining of the digestive tract
d) Aid in the production of bile
The process of converting food into energy and building blocks for the body is known as:
a) Digestion
b) Assimilation
c) Absorption
d) Metabolism
Which of the following is an example of a complex carbohydrate?
a) Glucose
b) Fructose
c) Sucrose
d) Starch
What is the purpose of the esophagus in the digestive system?
a) Produce digestive enzymes
b) Absorb nutrients
c) Store bile
d) Transport food from the mouth to the stomach