Diseases & Immunity — Homi Bhabha Exam Biology MCQs with Solutions
Free Homi Bhabha Exam Biology Diseases & Immunity MCQs with step-by-step solutions (8 questions). Part of Biotechnology & Applied Biology. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Diseases & Immunity · medium · theory
Diseases that spread from an infected person to a healthy person are called:
A. communicable (infectious) diseases ✓ Correct
B. non-communicable diseases
C. hereditary diseases
D. deficiency diseases
Solution: Communicable diseases are caused by pathogens and spread from person to person.
Q2 — Diseases & Immunity · hard · theory
A preparation that gives the body immunity against a particular disease is a:
A. vaccine ✓ Correct
B. painkiller
C. antibiotic
D. vitamin
Solution: A vaccine trains the immune system to protect against a specific disease.
Q3 — Diseases & Immunity · medium · theory
Which blood cells help defend the body against infection?
A. platelets only
B. white blood cells ✓ Correct
C. plasma
D. red blood cells
Solution: White blood cells fight infections as part of the immune system.
Q4 — Diseases & Immunity · hard · theory
Antibiotics are effective against ______ but NOT against ______:
A. viruses; bacteria
B. plants; animals
C. bacteria; viruses ✓ Correct
D. fungi; bacteria
Solution: Antibiotics work on bacteria; they do not kill viruses, so they cannot cure viral diseases like the common cold.
Q5 — Diseases & Immunity · medium · theory
Malaria and dengue are spread by:
A. mosquitoes (vectors) ✓ Correct
B. contaminated water only
C. touching
D. air
Solution: These are vector-borne diseases transmitted by mosquitoes.
Q6 — Diseases & Immunity · hard · theory
Which of the following is caused by a virus?
A. Cholera
B. Tuberculosis
C. Tetanus
D. AIDS ✓ Correct
Solution: AIDS is caused by the HIV virus; the others are bacterial diseases.
Q7 — Diseases & Immunity · medium · theory
The protective proteins produced by the body to fight against germs are called:
A. enzymes
B. antibodies ✓ Correct
C. antigens
D. hormones
Solution: Antibodies are produced by the immune system to neutralise pathogens (antigens).
Q8 — Diseases & Immunity · hard · theory
Giving vaccines to children to protect them from diseases is called:
A. digestion
B. fermentation
C. immunisation (vaccination) ✓ Correct
D. pollination
Solution: Immunisation uses vaccines to build immunity and prevent diseases such as polio and measles.