Q. What enzyme is responsible for the digestion of carbohydrates in the mouth? (2020)
A.
Pepsin
B.
Amylase
C.
Lipase
D.
Trypsin
Show solution
Solution
Salivary amylase is the enzyme that begins the digestion of carbohydrates in the mouth.
Correct Answer:
B
— Amylase
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Q. What is the function of bile in digestion? (2022)
A.
Breaks down proteins
B.
Emulsifies fats
C.
Digests carbohydrates
D.
Absorbs vitamins
Show solution
Solution
Bile emulsifies fats, making them easier to digest by lipases.
Correct Answer:
B
— Emulsifies fats
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Q. What is the function of the pancreas in digestion? (2019)
A.
Secretes bile
B.
Produces digestive enzymes
C.
Absorbs nutrients
D.
Stores food
Show solution
Solution
The pancreas produces digestive enzymes that help in the digestion of carbohydrates, proteins, and fats.
Correct Answer:
B
— Produces digestive enzymes
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Q. What is the function of the villi in the small intestine? (2019)
A.
Increase surface area for absorption
B.
Secrete digestive enzymes
C.
Produce bile
D.
Store nutrients
Show solution
Solution
Villi increase the surface area of the small intestine, enhancing nutrient absorption.
Correct Answer:
A
— Increase surface area for absorption
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Q. What is the function of villi in the small intestine? (2019)
A.
Secretion of enzymes
B.
Absorption of nutrients
C.
Production of bile
D.
Storage of food
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Solution
Villi increase the surface area of the small intestine, enhancing the absorption of nutrients.
Correct Answer:
B
— Absorption of nutrients
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Q. What is the main carbohydrate found in the human diet? (2023)
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Fructose
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Solution
Starch is the main carbohydrate found in the human diet, primarily sourced from plants.
Correct Answer:
A
— Starch
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Q. What is the main enzyme involved in protein digestion in the stomach? (2021)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Pepsin is the main enzyme that digests proteins in the acidic environment of the stomach.
Correct Answer:
B
— Pepsin
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Q. What is the main function of the gastric acid in the stomach? (2019)
A.
Neutralizes food
B.
Activates digestive enzymes
C.
Absorbs nutrients
D.
Emulsifies fats
Show solution
Solution
Gastric acid activates digestive enzymes, particularly pepsinogen to pepsin, and helps in protein digestion.
Correct Answer:
B
— Activates digestive enzymes
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Q. What is the main function of the gastric juice? (2021)
A.
Neutralizing acids
B.
Breaking down carbohydrates
C.
Digestion of proteins
D.
Absorbing nutrients
Show solution
Solution
Gastric juice contains hydrochloric acid and pepsin, which are essential for the digestion of proteins.
Correct Answer:
C
— Digestion of proteins
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Q. What is the main function of the pancreas in digestion? (2019)
A.
Secretes bile
B.
Produces digestive enzymes
C.
Absorbs nutrients
D.
Stores glycogen
Show solution
Solution
The pancreas produces digestive enzymes that help in the digestion of carbohydrates, proteins, and fats.
Correct Answer:
B
— Produces digestive enzymes
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Q. What is the main site of nutrient absorption in the digestive system? (2020)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
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Solution
The small intestine is the main site for the absorption of nutrients.
Correct Answer:
C
— Small intestine
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Q. What is the main site of protein digestion in the digestive system? (2021)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
Protein digestion primarily occurs in the stomach, where pepsin breaks down proteins into peptides.
Correct Answer:
B
— Stomach
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Q. What is the main site of protein digestion? (2021)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
Protein digestion begins in the stomach, where pepsin breaks down proteins into peptides.
Correct Answer:
B
— Stomach
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Q. What is the primary function of the esophagus? (2023)
A.
Digestion of food
B.
Absorption of nutrients
C.
Transport of food to the stomach
D.
Secretion of enzymes
Show solution
Solution
The primary function of the esophagus is to transport food from the mouth to the stomach.
Correct Answer:
C
— Transport of food to the stomach
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Q. What is the primary function of the pancreas in digestion? (2019)
A.
Secretes bile
B.
Produces digestive enzymes
C.
Absorbs nutrients
D.
Stores glycogen
Show solution
Solution
The pancreas produces digestive enzymes that help in the digestion of carbohydrates, proteins, and fats.
Correct Answer:
B
— Produces digestive enzymes
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Q. What is the primary function of the small intestine in digestion? (2020)
A.
Absorption of nutrients
B.
Mechanical digestion
C.
Chemical digestion
D.
Storage of food
Show solution
Solution
The primary function of the small intestine is the absorption of nutrients from digested food.
Correct Answer:
A
— Absorption of nutrients
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Q. What is the primary site of nutrient absorption in the digestive system? (2023)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
The small intestine is the primary site for the absorption of nutrients from digested food.
Correct Answer:
C
— Small intestine
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Q. What is the primary site of nutrient absorption in the human body? (2020)
A.
Stomach
B.
Large intestine
C.
Small intestine
D.
Esophagus
Show solution
Solution
The small intestine is the primary site for the absorption of nutrients due to its large surface area.
Correct Answer:
C
— Small intestine
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Q. What is the primary site of protein digestion? (2023)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
The stomach is the primary site of protein digestion, where pepsin begins the breakdown of proteins.
Correct Answer:
B
— Stomach
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Q. What is the role of the pancreas in digestion? (2023)
A.
Secretes bile
B.
Produces digestive enzymes
C.
Absorbs nutrients
D.
Stores food
Show solution
Solution
The pancreas produces digestive enzymes that help in the digestion of carbohydrates, proteins, and fats.
Correct Answer:
B
— Produces digestive enzymes
Learn More →
Q. Which enzyme is responsible for protein digestion in the stomach? (2021)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Pepsin is the enzyme that digests proteins in the acidic environment of the stomach.
Correct Answer:
B
— Pepsin
Learn More →
Q. Which enzyme is responsible for the digestion of carbohydrates in the mouth? (2021)
A.
Amylase
B.
Pepsin
C.
Lipase
D.
Trypsin
Show solution
Solution
Amylase is the enzyme that breaks down carbohydrates into simpler sugars in the mouth.
Correct Answer:
A
— Amylase
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Q. Which enzyme is secreted by the pancreas to aid in protein digestion? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Trypsin is a pancreatic enzyme that helps in the digestion of proteins in the small intestine.
Correct Answer:
C
— Trypsin
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Q. Which enzyme is secreted by the pancreas to digest proteins? (2023)
A.
Amylase
B.
Pepsin
C.
Trypsin
D.
Lipase
Show solution
Solution
Trypsin is a proteolytic enzyme secreted by the pancreas that digests proteins in the small intestine.
Correct Answer:
C
— Trypsin
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Q. Which nutrient is primarily absorbed in the stomach? (2020)
A.
Proteins
B.
Fats
C.
Carbohydrates
D.
Water and alcohol
Show solution
Solution
The stomach primarily absorbs water and alcohol, while other nutrients are absorbed in the small intestine.
Correct Answer:
D
— Water and alcohol
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Q. Which of the following enzymes is secreted by the pancreas? (2020)
A.
Pepsin
B.
Amylase
C.
Trypsin
D.
Both Amylase and Trypsin
Show solution
Solution
Both amylase and trypsin are enzymes secreted by the pancreas to aid in digestion.
Correct Answer:
D
— Both Amylase and Trypsin
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Q. Which of the following is a function of saliva? (2022)
A.
Digestion of fats
B.
Digestion of proteins
C.
Digestion of carbohydrates
D.
Absorption of nutrients
Show solution
Solution
Saliva contains amylase, which begins the digestion of carbohydrates in the mouth.
Correct Answer:
C
— Digestion of carbohydrates
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Q. Which of the following is a function of the gastric juice? (2023)
A.
Neutralizes stomach acid
B.
Digests carbohydrates
C.
Kills bacteria
D.
Absorbs nutrients
Show solution
Solution
Gastric juice contains hydrochloric acid, which helps kill bacteria in the stomach.
Correct Answer:
C
— Kills bacteria
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Q. Which of the following is a function of the large intestine? (2022)
A.
Digestion of proteins
B.
Absorption of nutrients
C.
Formation of feces
D.
Secretion of enzymes
Show solution
Solution
The large intestine is responsible for the formation of feces and the absorption of water.
Correct Answer:
C
— Formation of feces
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Q. Which of the following is a function of the stomach? (2022)
A.
Absorption of nutrients
B.
Secretion of hydrochloric acid
C.
Production of bile
D.
Digestion of carbohydrates
Show solution
Solution
The stomach secretes hydrochloric acid, which aids in digestion and creates an acidic environment for enzymes.
Correct Answer:
B
— Secretion of hydrochloric acid
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Showing 1 to 30 of 41 (2 Pages)
Human Physiology - Digestion & Absorption MCQ & Objective Questions
Understanding "Human Physiology - Digestion & Absorption" is crucial for students preparing for school exams and competitive tests. This topic not only forms a significant part of the syllabus but also helps in grasping essential concepts related to how our body processes food. Practicing MCQs and objective questions enhances your exam preparation, allowing you to identify important questions and solidify your knowledge through practice questions.
What You Will Practise Here
Overview of the digestive system and its functions
Key processes of digestion: mechanical and chemical breakdown
Absorption mechanisms in the small intestine
Role of enzymes and hormones in digestion
Diagrammatic representation of the digestive tract
Common disorders related to digestion and absorption
Important definitions and terminologies in human physiology
Exam Relevance
The topic of "Human Physiology - Digestion & Absorption" frequently appears in CBSE, State Boards, NEET, and JEE exams. Students can expect questions that test their understanding of the digestive processes, the role of various organs, and the biochemical pathways involved. Common question patterns include multiple-choice questions that assess both theoretical knowledge and application of concepts.
Common Mistakes Students Make
Confusing the roles of different enzymes in digestion
Overlooking the importance of the small intestine in absorption
Misunderstanding the sequence of digestive processes
Neglecting to study the impact of dietary factors on digestion
FAQs
Question: What are the main organs involved in digestion?Answer: The main organs include the mouth, esophagus, stomach, small intestine, and large intestine.
Question: How do enzymes aid in digestion?Answer: Enzymes break down complex food molecules into simpler forms that can be absorbed by the body.
Ready to enhance your understanding? Dive into our practice MCQs and test your knowledge on "Human Physiology - Digestion & Absorption." Your success in exams starts with solid preparation!
