Healthcare Fundamentals Set 290 MCQs
Practice 15 questions with answers and concise explanations for General Medical revision.
15
General Medical
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Active recall
How to use: Try each question first. Open the answer only after choosing an option. Revisit the questions you miss.
Q1. The largest organ of the human body is the:
- Skin
- Liver
- Brain
- Lung
Show answer & explanation
Correct answer: A. Skin
The skin is the largest organ of the human body by surface area and mass.
Q2. How many pairs of cranial nerves are normally described?
- 10
- 11
- 12
- 13
Show answer & explanation
Correct answer: C. 12
Twelve pairs of cranial nerves are classically described.
Q3. A normal human somatic cell usually contains how many chromosomes?
- 23
- 44
- 46
- 48
Show answer & explanation
Correct answer: C. 46
Human somatic cells normally contain 46 chromosomes arranged in 23 pairs.
Q4. In DNA, adenine pairs with:
- Thymine
- Guanine
- Cytosine
- Uracil
Show answer & explanation
Correct answer: A. Thymine
In double-stranded DNA, adenine pairs with thymine through hydrogen bonding.
Q5. In DNA, guanine pairs with:
- Cytosine
- Thymine
- Adenine
- Uracil
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Correct answer: A. Cytosine
In double-stranded DNA, guanine pairs with cytosine.
Q6. Hydrochloric acid in the stomach is secreted mainly by:
- Parietal cells
- Chief cells
- Goblet cells
- Kupffer cells
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Correct answer: A. Parietal cells
Gastric parietal cells secrete hydrochloric acid and intrinsic factor.
Q7. Steam under pressure is the principle used in:
- Autoclaving
- Dry heat oven only
- Filtration
- Radiography
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Correct answer: A. Autoclaving
Autoclaving uses saturated steam under pressure to achieve sterilization.
Q8. Sterile technique is primarily intended to:
- Reduce microbial contamination
- Increase drug absorption
- Increase blood pressure
- Change blood group
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Correct answer: A. Reduce microbial contamination
Sterile technique is used to prevent or minimize microbial contamination of sterile fields and materials.
Q9. Urine is formed primarily in the:
- Kidneys
- Liver
- Spleen
- Pancreas
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Correct answer: A. Kidneys
The kidneys filter blood and form urine through nephron processes.
Q10. Insulin generally acts to:
- Lower blood glucose
- Increase blood glucose
- Stop oxygen transport
- Produce bile
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Correct answer: A. Lower blood glucose
Insulin promotes glucose uptake and storage and generally lowers blood glucose concentration.
Q11. What is the structural and functional unit of the kidney?
- Neuron
- Nephron
- Alveolus
- Hepatocyte
Show answer & explanation
Correct answer: B. Nephron
The nephron is the basic structural and functional unit of the kidney.
Q12. Which structure is the main site of gas exchange in the lungs?
- Trachea
- Bronchus
- Alveoli
- Pleura
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Correct answer: C. Alveoli
Gas exchange mainly occurs across the thin walls of the alveoli and pulmonary capillaries.
Q13. Which ion is the major intracellular cation?
- Sodium
- Potassium
- Chloride
- Bicarbonate
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Correct answer: B. Potassium
Potassium is the major cation inside cells, while sodium predominates extracellularly.
Q14. Which ion is the major extracellular cation?
- Potassium
- Magnesium
- Sodium
- Phosphate
Show answer & explanation
Correct answer: C. Sodium
Sodium is the major cation in extracellular fluid.
Q15. What is the main function of hemoglobin?
- Transport oxygen
- Produce bile
- Filter urine
- Digest protein
Show answer & explanation
Correct answer: A. Transport oxygen
Hemoglobin in red blood cells binds and transports oxygen.
How to Revise This Set
Attempt all 15 questions once without checking answers. Review only the questions you missed, then repeat those in your next revision round.
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How to Use This MCQ Set for Revision
Attempt the questions once without looking at the explanations. Mark the items you were unsure about, then review the supplied explanation for each answer and repeat only those marked questions. On the next revision, mix the difficult questions back into the full set instead of memorising answer positions.
Use the set as active recall: answer first, check second, and note the concept behind every mistake. A short second attempt after a gap is more useful than repeatedly reading the same explanation. Keep your revision focused on the facts and explanations already provided in this page.
