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 medium is specifically designed for the culture of orchid tissues?
A.
Murashige and Skoog
B.
Gamborg's B5
C.
Orchid medium
D.
Nitsch and Nitsch
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Solution
Orchid medium is specifically formulated to meet the unique nutritional requirements of orchid tissues.
Correct Answer:
C
— Orchid medium
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Q. Which metabolic pathway is primarily responsible for the detoxification of ammonia in the liver?
A.
Glycolysis
B.
Urea cycle
C.
Krebs cycle
D.
Fatty acid oxidation
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Solution
The urea cycle is primarily responsible for the detoxification of ammonia in the liver, converting it to urea.
Correct Answer:
B
— Urea cycle
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Q. Which metabolic pathway is primarily used by bacteria to ferment glucose?
A.
Krebs cycle
B.
Glycolysis
C.
Electron transport chain
D.
Pentose phosphate pathway
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Solution
Glycolysis is the primary pathway for glucose fermentation in bacteria.
Correct Answer:
B
— Glycolysis
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Q. Which metabolic pathway occurs in the cytoplasm and breaks down glucose?
A.
Krebs cycle
B.
Glycolysis
C.
Electron transport chain
D.
Beta-oxidation
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Solution
Glycolysis is the metabolic pathway that occurs in the cytoplasm and breaks down glucose.
Correct Answer:
B
— Glycolysis
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Q. Which method can be used to determine the purity of a protein sample?
A.
Mass spectrometry
B.
Western blotting
C.
Both A and B
D.
None of the above
Show solution
Solution
Both mass spectrometry and Western blotting can be used to assess the purity of a protein sample.
Correct Answer:
C
— Both A and B
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Q. Which method is commonly used for sterilizing surgical instruments?
A.
Boiling water
B.
Chemical disinfection
C.
Autoclaving
D.
Ultraviolet light
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Solution
Autoclaving is a widely used method for sterilizing surgical instruments, utilizing high-pressure steam.
Correct Answer:
C
— Autoclaving
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Q. Which method is effective for removing pathogens from water?
A.
Boiling
B.
Fluoridation
C.
Chlorination
D.
Both boiling and chlorination
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Solution
Both boiling and chlorination are effective methods for removing pathogens from water.
Correct Answer:
D
— Both boiling and chlorination
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Q. Which microorganism is commonly used in alcoholic fermentation?
A.
Escherichia coli
B.
Saccharomyces cerevisiae
C.
Lactobacillus
D.
Bacillus subtilis
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Solution
Saccharomyces cerevisiae, or baker's yeast, is widely used in alcoholic fermentation to produce ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
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Q. Which microorganism is commonly used in the biological treatment of wastewater?
A.
Escherichia coli
B.
Bacillus subtilis
C.
Pseudomonas aeruginosa
D.
Activated sludge bacteria
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Solution
Activated sludge bacteria are commonly used in the biological treatment of wastewater due to their ability to degrade organic matter.
Correct Answer:
D
— Activated sludge bacteria
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Q. Which microorganism is commonly used in the production of penicillin?
A.
Bacillus subtilis
B.
Penicillium chrysogenum
C.
Escherichia coli
D.
Saccharomyces cerevisiae
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Solution
Penicillium chrysogenum is the mold used to produce penicillin, an important antibiotic.
Correct Answer:
B
— Penicillium chrysogenum
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Q. Which microorganism is known for causing botulism from improperly canned foods?
A.
Staphylococcus aureus
B.
Clostridium botulinum
C.
Bacillus cereus
D.
Listeria monocytogenes
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Solution
Clostridium botulinum produces a potent toxin that can lead to botulism when ingested from improperly canned foods.
Correct Answer:
B
— Clostridium botulinum
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Q. Which microorganism is known for causing malaria?
A.
Plasmodium
B.
Giardia
C.
E. coli
D.
Staphylococcus
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Solution
Plasmodium is the protozoan parasite responsible for causing malaria, transmitted by Anopheles mosquitoes.
Correct Answer:
A
— Plasmodium
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Q. Which microorganism is often associated with the treatment of high-strength industrial wastewater?
A.
Lactobacillus
B.
Methanogens
C.
Streptococcus
D.
Bifidobacterium
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Solution
Methanogens are often associated with the treatment of high-strength industrial wastewater, particularly in anaerobic digestion processes.
Correct Answer:
B
— Methanogens
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Q. Which microorganism is primarily responsible for the fermentation of soybeans to produce soy sauce?
A.
Aspergillus oryzae
B.
Lactobacillus
C.
Saccharomyces cerevisiae
D.
Bacillus subtilis
Show solution
Solution
Aspergillus oryzae is used in the fermentation of soybeans to produce soy sauce.
Correct Answer:
A
— Aspergillus oryzae
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Q. Which microorganism is responsible for causing malaria?
A.
Plasmodium falciparum
B.
Bacillus anthracis
C.
Clostridium botulinum
D.
Vibrio cholerae
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Solution
Plasmodium falciparum is the most deadly species of the Plasmodium genus that causes malaria, transmitted by Anopheles mosquitoes.
Correct Answer:
A
— Plasmodium falciparum
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Q. Which microorganism is responsible for the majority of urinary tract infections?
A.
Escherichia coli
B.
Staphylococcus aureus
C.
Streptococcus pneumoniae
D.
Candida albicans
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Solution
Escherichia coli is the most common cause of urinary tract infections, accounting for about 80-90% of cases.
Correct Answer:
A
— Escherichia coli
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Q. Which microorganism is used in the production of antibiotics other than penicillin?
A.
Streptomyces
B.
Bacillus
C.
Lactobacillus
D.
Clostridium
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Solution
Streptomyces is a genus of bacteria known for producing a variety of antibiotics, including streptomycin.
Correct Answer:
A
— Streptomyces
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Q. Which microorganism is used in the production of yogurt?
A.
Lactobacillus
B.
Salmonella
C.
Clostridium
D.
Bacillus anthracis
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Solution
Lactobacillus is a type of bacteria used in the fermentation process to produce yogurt.
Correct Answer:
A
— Lactobacillus
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Q. Which microorganism is utilized in the production of ethanol through fermentation?
A.
Lactobacillus
B.
Saccharomyces cerevisiae
C.
Clostridium acetobutylicum
D.
Aspergillus niger
Show solution
Solution
Saccharomyces cerevisiae, or baker's yeast, is commonly used to ferment sugars into ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
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Q. Which milk product is fermented to produce yogurt?
A.
Cream
B.
Skim milk
C.
Whole milk
D.
Milk with added cultures
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Solution
Yogurt is made by fermenting milk with specific bacterial cultures that convert lactose into lactic acid.
Correct Answer:
D
— Milk with added cultures
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Q. Which milk product is typically lower in calories?
A.
Whole milk
B.
2% milk
C.
Skim milk
D.
Cream
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Solution
Skim milk has had most of its fat removed, making it lower in calories compared to whole and 2% milk.
Correct Answer:
C
— Skim milk
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Q. Which mineral is a key antioxidant that helps protect cells from damage?
A.
Selenium
B.
Iron
C.
Copper
D.
Zinc
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Solution
Selenium is an important antioxidant that helps protect cells from oxidative stress.
Correct Answer:
A
— Selenium
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Q. Which mineral is crucial for maintaining healthy bones and teeth?
A.
Sodium
B.
Potassium
C.
Calcium
D.
Iron
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Solution
Calcium is vital for the development and maintenance of strong bones and teeth.
Correct Answer:
C
— Calcium
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Q. Which mineral is essential for the synthesis of collagen?
A.
Zinc
B.
Iron
C.
Calcium
D.
Sodium
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Solution
Zinc is important for collagen synthesis, which is vital for skin, bone, and connective tissue health.
Correct Answer:
A
— Zinc
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Q. Which mineral is important for nerve transmission?
A.
Calcium
B.
Iron
C.
Potassium
D.
Sodium
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Solution
Potassium is essential for nerve transmission and helps maintain proper nerve function.
Correct Answer:
C
— Potassium
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Q. Which mineral is important for thyroid hormone production?
A.
Iodine
B.
Zinc
C.
Calcium
D.
Magnesium
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Solution
Iodine is necessary for the synthesis of thyroid hormones, which regulate metabolism.
Correct Answer:
A
— Iodine
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Q. Which mineral is vital for oxygen transport in the blood?
A.
Calcium
B.
Iron
C.
Potassium
D.
Sodium
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Solution
Iron is a key component of hemoglobin, which binds to oxygen in red blood cells for transport throughout the body.
Correct Answer:
B
— Iron
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Q. Which mold is known for producing aflatoxins, potent carcinogens?
A.
Aspergillus flavus
B.
Penicillium notatum
C.
Rhizopus oryzae
D.
Cladosporium herbarum
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Solution
Aspergillus flavus is known for producing aflatoxins, which are highly toxic and carcinogenic.
Correct Answer:
A
— Aspergillus flavus
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Q. Which molecule acts as the electron carrier in glycolysis?
A.
NAD+
B.
FAD
C.
CoA
D.
ATP
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Solution
NAD+ acts as the electron carrier, being reduced to NADH during glycolysis.
Correct Answer:
A
— NAD+
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Q. Which molecule carries amino acids to the ribosome during translation?
A.
mRNA
B.
tRNA
C.
rRNA
D.
DNA
Show solution
Solution
tRNA (transfer RNA) carries amino acids to the ribosome during translation.
Correct Answer:
B
— tRNA
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