Medical Science MCQ & Objective Questions
Medical Science is a crucial subject for students aspiring to excel in their school and competitive exams. Understanding key concepts and practicing MCQs can significantly enhance your exam preparation. By solving objective questions, you can identify important topics and improve your chances of scoring better in exams.
What You Will Practise Here
Fundamentals of Human Anatomy and Physiology
Key Concepts in Microbiology and Immunology
Essential Definitions and Terminology in Medical Science
Important Diagrams related to Body Systems
Pathology and Disease Mechanisms
Pharmacology Basics and Drug Classifications
Common Medical Procedures and Their Implications
Exam Relevance
Medical Science is a significant part of the curriculum for CBSE, State Boards, NEET, and JEE exams. Questions often focus on understanding human body systems, disease processes, and medical terminology. Common patterns include multiple-choice questions that test both theoretical knowledge and practical application, making it essential to be well-prepared with important Medical Science MCQ questions.
Common Mistakes Students Make
Overlooking the importance of diagrams in understanding anatomy.
Confusing similar terms in pharmacology and their applications.
Neglecting to connect theoretical concepts with practical scenarios.
Misinterpreting questions due to lack of careful reading.
FAQs
Question: What are the best ways to prepare for Medical Science MCQs?Answer: Regular practice of objective questions, reviewing key concepts, and understanding diagrams are effective strategies.
Question: How can I improve my score in Medical Science exams?Answer: Focus on solving practice questions and revising important topics consistently.
Now is the time to enhance your understanding of Medical Science! Dive into our practice MCQs and test your knowledge to ensure you are well-prepared for your exams. Remember, consistent practice leads to success!
Q. What is the primary function of mRNA in protein synthesis?
A.
To transport amino acids
B.
To carry genetic information from DNA
C.
To form the ribosome structure
D.
To catalyze peptide bond formation
Show solution
Solution
mRNA carries genetic information from DNA to the ribosome for protein synthesis.
Correct Answer:
B
— To carry genetic information from DNA
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Q. What is the primary function of oxidative phosphorylation in cellular respiration?
A.
To produce glucose
B.
To generate ATP
C.
To consume oxygen
D.
To produce carbon dioxide
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Solution
Oxidative phosphorylation primarily generates ATP through the electron transport chain and chemiosmosis.
Correct Answer:
B
— To generate ATP
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Q. What is the primary function of plasmids in bacteria?
A.
Energy production
B.
Antibiotic resistance
C.
Protein synthesis
D.
Cell division
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Solution
Plasmids often carry genes that provide bacteria with antibiotic resistance, allowing them to survive in hostile environments.
Correct Answer:
B
— Antibiotic resistance
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Q. What is the primary function of T cells in the immune response?
A.
Produce antibodies
B.
Directly kill infected cells
C.
Activate B cells
D.
Phagocytize pathogens
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Solution
T cells are primarily responsible for directly killing infected cells and coordinating the immune response.
Correct Answer:
B
— Directly kill infected cells
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Q. What is the primary function of T cells in the immune system?
A.
Produce antibodies
B.
Destroy infected cells
C.
Activate B cells
D.
Phagocytize pathogens
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Solution
T cells are primarily responsible for directly killing infected cells and coordinating the immune response.
Correct Answer:
B
— Destroy infected cells
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Q. What is the primary function of the appendix?
A.
Digest food
B.
Store bile
C.
Immune function
D.
Absorb nutrients
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Solution
The appendix is thought to play a role in immune function, particularly in gut flora management.
Correct Answer:
C
— Immune function
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Q. What is the primary function of the autonomic nervous system?
A.
To control voluntary muscle movements
B.
To regulate involuntary bodily functions
C.
To process sensory information
D.
To coordinate reflex actions
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Solution
The autonomic nervous system regulates involuntary bodily functions such as heart rate, digestion, and respiratory rate.
Correct Answer:
B
— To regulate involuntary bodily functions
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Q. What is the primary function of the cardiovascular system?
A.
To transport oxygen and nutrients to tissues
B.
To regulate body temperature
C.
To produce hormones
D.
To facilitate digestion
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Solution
The primary function of the cardiovascular system is to transport oxygen and nutrients to tissues throughout the body.
Correct Answer:
A
— To transport oxygen and nutrients to tissues
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Q. What is the primary function of the central nervous system (CNS)?
A.
To transmit signals to muscles
B.
To process and integrate information
C.
To regulate homeostasis
D.
To produce hormones
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Solution
The central nervous system (CNS) processes and integrates information received from the peripheral nervous system.
Correct Answer:
B
— To process and integrate information
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Q. What is the primary function of the deltoid muscle?
A.
Flexion of the shoulder
B.
Abduction of the shoulder
C.
Extension of the shoulder
D.
Medial rotation of the shoulder
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Solution
The deltoid muscle primarily functions in the abduction of the shoulder.
Correct Answer:
B
— Abduction of the shoulder
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Q. What is the primary function of the diaphragm during respiration?
A.
To filter air
B.
To increase lung volume
C.
To produce sound
D.
To transport oxygen
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Solution
The diaphragm contracts to increase lung volume during inhalation, allowing air to flow into the lungs.
Correct Answer:
B
— To increase lung volume
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Q. What is the primary function of the endocrine system?
A.
To provide structural support
B.
To transport oxygen
C.
To secrete hormones
D.
To facilitate movement
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Solution
The primary function of the endocrine system is to secrete hormones that regulate various bodily functions.
Correct Answer:
C
— To secrete hormones
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Q. What is the primary function of the gene R gene in plants?
A.
To promote flowering
B.
To confer disease resistance
C.
To enhance photosynthesis
D.
To increase root growth
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Solution
R genes are known to confer resistance to specific pathogens in plants.
Correct Answer:
B
— To confer disease resistance
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Q. What is the primary function of the heart in the cardiovascular system?
A.
To filter blood
B.
To pump blood throughout the body
C.
To produce hormones
D.
To store oxygen
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Solution
The primary function of the heart is to pump blood throughout the body, supplying oxygen and nutrients to tissues.
Correct Answer:
B
— To pump blood throughout the body
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Q. What is the primary function of the heart?
A.
To filter blood
B.
To pump blood throughout the body
C.
To produce hormones
D.
To absorb nutrients
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Solution
The primary function of the heart is to pump blood throughout the body, supplying oxygen and nutrients to tissues.
Correct Answer:
B
— To pump blood throughout the body
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Q. What is the primary function of the kidneys in maintaining homeostasis?
A.
Regulating blood pressure
B.
Producing hormones
C.
Filtering waste from the blood
D.
Maintaining electrolyte balance
Show solution
Solution
The kidneys filter waste products from the blood, which is essential for maintaining homeostasis.
Correct Answer:
C
— Filtering waste from the blood
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Q. What is the primary function of the kidneys in the human body?
A.
Regulate blood pressure
B.
Filter waste from the blood
C.
Produce hormones
D.
Maintain electrolyte balance
Show solution
Solution
The primary function of the kidneys is to filter waste products from the blood, which is essential for maintaining homeostasis.
Correct Answer:
B
— Filter waste from the blood
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Q. What is the primary function of the kidneys?
A.
Regulation of blood pressure
B.
Production of hormones
C.
Filtration of blood and urine formation
D.
Digestion of food
Show solution
Solution
The primary function of the kidneys is to filter blood and form urine.
Correct Answer:
C
— Filtration of blood and urine formation
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Q. What is the primary function of the Krebs cycle?
A.
ATP production
B.
Carbon fixation
C.
Electron transport
D.
Energy extraction from acetyl-CoA
Show solution
Solution
The primary function of the Krebs cycle is to extract energy from acetyl-CoA through a series of reactions.
Correct Answer:
D
— Energy extraction from acetyl-CoA
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Q. What is the primary function of the lac operon in E. coli?
A.
To regulate amino acid synthesis
B.
To control lactose metabolism
C.
To enhance DNA replication
D.
To promote cell division
Show solution
Solution
The lac operon regulates the metabolism of lactose in E. coli by controlling the expression of genes required for lactose uptake and breakdown.
Correct Answer:
B
— To control lactose metabolism
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Q. What is the primary function of the large intestine?
A.
Absorption of nutrients
B.
Absorption of water and electrolytes
C.
Digestion of proteins
D.
Production of bile
Show solution
Solution
The primary function of the large intestine is to absorb water and electrolytes from indigestible food matter.
Correct Answer:
B
— Absorption of water and electrolytes
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Q. What is the primary function of the left ventricle in the heart?
A.
Pumping deoxygenated blood to the lungs
B.
Pumping oxygenated blood to the body
C.
Receiving blood from the body
D.
Receiving blood from the lungs
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Solution
The left ventricle pumps oxygenated blood to the body through the aorta.
Correct Answer:
B
— Pumping oxygenated blood to the body
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Q. What is the primary function of the liver in drug metabolism?
A.
Excretion of drugs
B.
Activation of prodrugs
C.
Biotransformation of drugs
D.
Storage of drugs
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Solution
The liver is primarily responsible for the biotransformation of drugs, converting them into more water-soluble compounds for excretion.
Correct Answer:
C
— Biotransformation of drugs
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Q. What is the primary function of the liver in metabolism?
A.
Storage of glucose
B.
Production of bile
C.
Detoxification of substances
D.
All of the above
Show solution
Solution
The liver plays multiple roles in metabolism, including storage of glucose, production of bile, and detoxification of harmful substances.
Correct Answer:
D
— All of the above
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Q. What is the primary function of the nucleus in a cell?
A.
Energy production
B.
Protein synthesis
C.
Genetic material storage
D.
Cellular respiration
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Solution
The nucleus stores the cell's genetic material (DNA) and is responsible for regulating gene expression.
Correct Answer:
C
— Genetic material storage
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Q. What is the primary function of the pancreas in relation to digestion?
A.
To produce bile
B.
To secrete digestive enzymes and hormones
C.
To absorb nutrients
D.
To store glycogen
Show solution
Solution
The pancreas produces digestive enzymes that help break down carbohydrates, proteins, and fats, as well as hormones like insulin.
Correct Answer:
B
— To secrete digestive enzymes and hormones
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Q. What is the primary function of the pancreas?
A.
Production of bile
B.
Secretion of digestive enzymes and hormones
C.
Filtration of blood
D.
Storage of nutrients
Show solution
Solution
The pancreas primarily functions in the secretion of digestive enzymes and hormones like insulin.
Correct Answer:
B
— Secretion of digestive enzymes and hormones
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Q. What is the primary function of the parotid gland?
A.
Secretion of tears
B.
Production of saliva
C.
Regulation of blood pressure
D.
Absorption of nutrients
Show solution
Solution
The parotid gland's primary function is the production and secretion of saliva.
Correct Answer:
B
— Production of saliva
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Q. What is the primary function of the pelvic floor muscles?
A.
Support pelvic organs
B.
Facilitate digestion
C.
Control blood flow
D.
Aid in respiration
Show solution
Solution
The primary function of the pelvic floor muscles is to support the pelvic organs.
Correct Answer:
A
— Support pelvic organs
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Q. What is the primary function of the phospholipid bilayer in cell membranes?
A.
Energy production
B.
Selective permeability
C.
Protein synthesis
D.
Cell division
Show solution
Solution
The phospholipid bilayer provides selective permeability, allowing certain substances to pass while blocking others.
Correct Answer:
B
— Selective permeability
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