Welcome to the Digestive System and Nutrition MCQs with Answers. In this post, we are sharing Digestive System and Nutrition Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Digestive System and Nutrition online MCQs Test.
Which organ is primarily responsible for the absorption of nutrients?
a) Stomach
b) Small intestine
c) Large intestine
d) Liver
The process of breaking down food into smaller molecules is known as:
a) Digestion
b) Absorption
c) Excretion
d) Respiration
What is the function of the stomach’s gastric acid?
a) To digest proteins
b) To neutralize food
c) To absorb nutrients
d) To kill bacteria
Which enzyme in the mouth begins the digestion of carbohydrates?
a) Pepsin
b) Amylase
c) Lipase
d) Trypsin
Which structure prevents food from entering the trachea during swallowing?
a) Epiglottis
b) Uvula
c) Esophagus
d) Pharynx
What is the primary role of the large intestine?
a) Digestion of proteins
b) Absorption of water and electrolytes
c) Absorption of nutrients
d) Digestion of carbohydrates
Which part of the digestive system is responsible for bile production?
a) Gallbladder
b) Pancreas
c) Liver
d) Small intestine
What is the function of the pancreas in digestion?
a) Produce bile
b) Store food
c) Secrete digestive enzymes
d) Absorb nutrients
Which enzyme is responsible for protein digestion in the stomach?
a) Amylase
b) Lipase
c) Pepsin
d) Lactase
What is the function of the villi in the small intestine?
a) Produce digestive enzymes
b) Increase surface area for absorption
c) Store bile
d) Regulate pH levels
The process by which nutrients are taken up by the bloodstream is called:
a) Digestion
b) Absorption
c) Excretion
d) Respiration
Which digestive organ is involved in both digestion and absorption?
a) Stomach
b) Small intestine
c) Large intestine
d) Liver
Which of the following is a function of the liver?
a) Production of insulin
b) Storage of bile
c) Production of bile
d) Production of digestive enzymes
The breakdown of fats into fatty acids and glycerol is facilitated by:
a) Amylase
b) Pepsin
c) Lipase
d) Lactase
Which part of the digestive system is commonly referred to as the “food pipe”?
a) Trachea
b) Esophagus
c) Stomach
d) Duodenum
What is the name of the enzyme that breaks down lactose in dairy products?
a) Amylase
b) Lactase
c) Pepsin
d) Lipase
Which of the following is not a part of the digestive system?
a) Pancreas
b) Gallbladder
c) Kidney
d) Liver
What is the function of the esophagus?
a) Absorb nutrients
b) Digest food
c) Transport food to the stomach
d) Produce digestive enzymes
Which section of the large intestine is closest to the small intestine?
a) Rectum
b) Cecum
c) Colon
d) Appendix
The primary function of bile is to:
a) Digest proteins
b) Emulsify fats
c) Neutralize stomach acid
d) Absorb nutrients
Which hormone stimulates the release of bile from the gallbladder?
a) Insulin
b) Gastrin
c) Cholecystokinin
d) Secretin
What is the primary function of the stomach?
a) Absorb nutrients
b) Digest proteins
c) Produce bile
d) Store food
Which type of digestion occurs in the mouth?
a) Mechanical digestion only
b) Chemical digestion only
c) Both mechanical and chemical digestion
d) Absorption
The digestive enzyme amylase is found in which digestive fluid?
a) Gastric juice
b) Saliva
c) Bile
d) Pancreatic juice
Which part of the digestive system absorbs most of the water from undigested food?
a) Small intestine
b) Large intestine
c) Stomach
d) Pancreas
What is the role of the gallbladder?
a) Produce digestive enzymes
b) Store and concentrate bile
c) Absorb nutrients
d) Digest carbohydrates
What are the finger-like projections in the small intestine called?
a) Cilia
b) Villi
c) Microvilli
d) Papillae
Which substance neutralizes stomach acid in the small intestine?
a) Bile
b) Pepsin
c) Gastrin
d) Sodium bicarbonate
What is the primary function of hydrochloric acid in the stomach?
a) Neutralize stomach acid
b) Break down carbohydrates
c) Kill pathogens
d) Emulsify fats
Which part of the digestive system is responsible for the production of insulin?
a) Liver
b) Pancreas
c) Gallbladder
d) Small intestine
What is the term for the rhythmic contraction of the digestive tract that moves food along?
a) Peristalsis
b) Segmentation
c) Digestion
d) Absorption
Which enzyme is responsible for the digestion of proteins in the stomach?
a) Amylase
b) Pepsin
c) Lipase
d) Lactase
What is the primary function of the duodenum?
a) Absorb nutrients
b) Digest proteins
c) Neutralize stomach acid
d) Produce bile
The process of breaking down food into simpler molecules is called:
a) Digestion
b) Metabolism
c) Absorption
d) Excretion
Which type of nutrient is primarily absorbed in the small intestine?
a) Carbohydrates
b) Proteins
c) Fats
d) All of the above
What is the name of the flap of tissue that covers the trachea during swallowing?
a) Uvula
b) Epiglottis
c) Esophagus
d) Larynx
Which organ stores bile produced by the liver?
a) Pancreas
b) Gallbladder
c) Small intestine
d) Large intestine
The enzyme pepsin is most active in which part of the digestive system?
a) Mouth
b) Small intestine
c) Stomach
d) Large intestine
What is the primary function of the rectum?
a) Absorb nutrients
b) Store and expel feces
c) Produce digestive enzymes
d) Neutralize stomach acid
Which digestive enzyme is secreted by the pancreas to aid in carbohydrate digestion?
a) Amylase
b) Pepsin
c) Lipase
d) Trypsin
The primary role of dietary fiber is to:
a) Provide energy
b) Facilitate digestion and promote regular bowel movements
c) Build muscle
d) Absorb nutrients
Which organ is primarily involved in the production of digestive enzymes and hormones?
a) Liver
b) Gallbladder
c) Pancreas
d) Stomach
Which substance in the digestive system helps to break down proteins into peptides?
a) Amylase
b) Pepsin
c) Lipase
d) Lactase
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