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. Which of the following is NOT a typical component of plant tissue culture media?
A.
Mineral salts
B.
Vitamins
C.
Antibiotics
D.
Proteins
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Solution
Proteins are not typically included in plant tissue culture media, while mineral salts, vitamins, and sometimes antibiotics are used.
Correct Answer:
D
— Proteins
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Q. Which of the following is NOT a use of vinegar in cooking?
A.
Marinades
B.
Pickling
C.
Baking soda neutralization
D.
Thickening agent
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Solution
Vinegar is not used as a thickening agent in cooking; it is more commonly used in marinades and pickling.
Correct Answer:
D
— Thickening agent
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Q. Which of the following is required to initiate DNA replication?
A.
RNA primer
B.
DNA ligase
C.
DNA helicase
D.
DNA polymerase
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Solution
An RNA primer is required to provide a starting point for DNA polymerase to begin synthesis.
Correct Answer:
A
— RNA primer
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Q. Which of the following items can be sterilized using dry heat?
A.
Plastic syringes
B.
Glassware
C.
Rubber gloves
D.
Surgical drapes
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Solution
Glassware can be sterilized using dry heat, as it can withstand high temperatures without damage.
Correct Answer:
B
— Glassware
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Q. Which of the following macromolecules can act as enzymes?
A.
Carbohydrates
B.
Lipids
C.
Proteins
D.
Nucleic acids
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Solution
Proteins can act as enzymes, catalyzing biochemical reactions.
Correct Answer:
C
— Proteins
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Q. Which of the following modifications can occur to mRNA before it is translated?
A.
5' capping
B.
3' polyadenylation
C.
RNA splicing
D.
All of the above
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Solution
All of the above modifications (5' capping, 3' polyadenylation, and RNA splicing) occur to mRNA before it is translated.
Correct Answer:
D
— All of the above
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Q. Which of the following muscles is innervated by the median nerve?
A.
Flexor carpi ulnaris
B.
Flexor digitorum profundus
C.
Flexor carpi radialis
D.
Brachioradialis
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Solution
The flexor carpi radialis is innervated by the median nerve.
Correct Answer:
C
— Flexor carpi radialis
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Q. Which of the following mutations can lead to a change in the amino acid sequence?
A.
Silent mutation
B.
Missense mutation
C.
Nonsense mutation
D.
All of the above
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Solution
A missense mutation results in a different amino acid being incorporated into the protein, potentially altering its function.
Correct Answer:
B
— Missense mutation
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Q. Which of the following nucleotides is NOT found in RNA?
A.
Adenine
B.
Cytosine
C.
Thymine
D.
Uracil
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Solution
Thymine is found in DNA, while RNA contains uracil instead.
Correct Answer:
C
— Thymine
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Q. Which of the following organs is located in the retroperitoneal space?
A.
Liver
B.
Pancreas
C.
Stomach
D.
Spleen
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Solution
The pancreas is located in the retroperitoneal space, behind the peritoneum.
Correct Answer:
B
— Pancreas
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Q. Which of the following practices can help reduce water pollution?
A.
Using pesticides excessively
B.
Properly disposing of hazardous waste
C.
Dumping chemicals in rivers
D.
Overusing fertilizers
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Solution
Proper disposal of hazardous waste is crucial in preventing water pollution.
Correct Answer:
B
— Properly disposing of hazardous waste
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Q. Which of the following processes occurs after transcription in eukaryotic cells?
A.
Translation
B.
Replication
C.
RNA splicing
D.
DNA repair
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Solution
RNA splicing is a process that occurs after transcription in eukaryotic cells, where introns are removed and exons are joined.
Correct Answer:
C
— RNA splicing
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Q. Which of the following protozoa is known to cause malaria?
A.
Entamoeba histolytica
B.
Plasmodium falciparum
C.
Trypanosoma brucei
D.
Toxoplasma gondii
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Solution
Plasmodium falciparum is the protozoan responsible for the most severe form of malaria.
Correct Answer:
B
— Plasmodium falciparum
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Q. Which of the following routes of administration typically results in the highest bioavailability?
A.
Intravenous
B.
Oral
C.
Intramuscular
D.
Subcutaneous
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Solution
Intravenous administration results in the highest bioavailability since the drug is delivered directly into the systemic circulation.
Correct Answer:
A
— Intravenous
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Q. Which of the following statements about DNA replication is true?
A.
It is a conservative process
B.
It is a semi-conservative process
C.
It is a dispersive process
D.
It occurs only in prokaryotes
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Solution
DNA replication is a semi-conservative process, meaning each new DNA molecule consists of one old strand and one new strand.
Correct Answer:
B
— It is a semi-conservative process
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Q. Which of the following statements about enzyme inhibitors is true?
A.
They always permanently inactivate enzymes.
B.
They can be reversible or irreversible.
C.
They only affect allosteric enzymes.
D.
They increase the rate of reaction.
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Solution
Enzyme inhibitors can be either reversible or irreversible, affecting enzyme activity in different ways.
Correct Answer:
B
— They can be reversible or irreversible.
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Q. Which of the following statements about enzymes is true?
A.
Enzymes can work on any substrate
B.
Enzymes are specific to their substrates
C.
Enzymes do not require cofactors
D.
Enzymes are only found in humans
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Solution
Enzymes are specific to their substrates, meaning each enzyme typically catalyzes only one type of reaction.
Correct Answer:
B
— Enzymes are specific to their substrates
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Q. Which of the following statements about oxidative phosphorylation is true?
A.
It occurs in the cytoplasm
B.
It requires oxygen
C.
It produces lactic acid
D.
It is independent of the electron transport chain
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Solution
Oxidative phosphorylation requires oxygen as the final electron acceptor in the electron transport chain.
Correct Answer:
B
— It requires oxygen
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Q. Which of the following structures is NOT part of the gastrointestinal tract?
A.
Esophagus
B.
Stomach
C.
Pancreas
D.
Large intestine
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Solution
The pancreas is an accessory organ and is not part of the gastrointestinal tract.
Correct Answer:
C
— Pancreas
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Q. Which of the following structures is NOT part of the pelvic cavity?
A.
Bladder
B.
Rectum
C.
Uterus
D.
Stomach
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Solution
The stomach is located in the abdominal cavity, not the pelvic cavity.
Correct Answer:
D
— Stomach
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Q. Which of the following techniques is commonly used to analyze chromosomes?
A.
PCR
B.
Karyotyping
C.
Gel electrophoresis
D.
Western blotting
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Solution
Karyotyping is a laboratory technique used to visualize and analyze the number and structure of chromosomes.
Correct Answer:
B
— Karyotyping
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Q. Which of the following techniques is commonly used to determine the sequence of amino acids in a peptide?
A.
Nuclear magnetic resonance (NMR)
B.
Mass spectrometry
C.
X-ray crystallography
D.
Electrophoresis
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Solution
Mass spectrometry is a widely used technique for determining the sequence of amino acids in peptides.
Correct Answer:
B
— Mass spectrometry
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Q. Which of the following techniques is used to introduce recombinant DNA into host cells?
A.
Electroporation
B.
PCR
C.
Gel electrophoresis
D.
Western blotting
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Solution
Electroporation is a technique used to introduce recombinant DNA into host cells by applying an electrical field to increase cell permeability.
Correct Answer:
A
— Electroporation
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Q. Which of the following traits can be introduced into transgenic plants?
A.
Herbicide resistance
B.
Increased susceptibility to diseases
C.
Reduced growth rate
D.
Lower nutritional content
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Solution
Herbicide resistance is a trait that can be introduced into transgenic plants, allowing them to survive applications of certain herbicides.
Correct Answer:
A
— Herbicide resistance
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Q. Which of the following traits is often targeted for improvement through plant breeding?
A.
Disease resistance
B.
Nutritional content
C.
Drought tolerance
D.
All of the above
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Solution
Plant breeding often targets multiple traits, including disease resistance, nutritional content, and drought tolerance.
Correct Answer:
D
— All of the above
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Q. Which of the following treatments is commonly used for HIV infection?
A.
Antibiotics
B.
Antiretroviral therapy
C.
Vaccines
D.
Corticosteroids
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Solution
Antiretroviral therapy (ART) is the standard treatment for HIV infection.
Correct Answer:
B
— Antiretroviral therapy
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Q. Which of the following tumors is classified as a sarcoma?
A.
Adenocarcinoma
B.
Osteosarcoma
C.
Basal cell carcinoma
D.
Melanoma
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Solution
Osteosarcoma is classified as a sarcoma, which is a malignant tumor arising from connective tissues, while the others are carcinomas.
Correct Answer:
B
— Osteosarcoma
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Q. Which of the following vectors can carry the largest DNA inserts?
A.
Plasmid vectors
B.
Viral vectors
C.
Bacterial artificial chromosomes
D.
Cosmids
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Solution
Bacterial artificial chromosomes (BACs) can carry larger DNA inserts compared to plasmids, viral vectors, or cosmids.
Correct Answer:
C
— Bacterial artificial chromosomes
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Q. Which of the following viruses is associated with the development of cervical cancer?
A.
Hepatitis B virus
B.
Human papillomavirus (HPV)
C.
Cytomegalovirus
D.
Epstein-Barr virus
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Solution
Human papillomavirus (HPV) is strongly associated with the development of cervical cancer.
Correct Answer:
B
— Human papillomavirus (HPV)
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Q. Which of the following viruses is known for causing severe acute respiratory syndrome (SARS)?
A.
Influenza virus
B.
SARS-CoV
C.
MERS-CoV
D.
Hantavirus
Show solution
Solution
SARS is caused by the SARS coronavirus (SARS-CoV).
Correct Answer:
B
— SARS-CoV
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