Edward Jenner is associated with the discovery of the vaccine for: MCQ with Answer and Explanation

Edward Jenner is associated with the discovery of the vaccine for:
A. Tuberculosis
B. Polio
C. Rabies
D. Smallpox
Answer: Option D
Solution (By JKExamLibrary)
Edward Jenner, in 1796, observed that milkmaids who had cowpox were immune to smallpox. He used material from cowpox lesions to inoculate a boy, who later proved immune to smallpox. This was the first successful vaccine. Rabies vaccine was developed by Louis Pasteur, polio vaccine by Jonas Salk, TB vaccine (BCG) by Calmette and Guérin. Smallpox has been eradicated globally.

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The most common method of reproduction in bacteria is:
A. Spore formation
B. Binary fission
C. Fragmentation
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Correct Answer: Option B


Explanation:
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A. Calcium
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Correct Answer: Option B


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Iodine is a key constituent of the thyroid hormones thyroxine (T₄) and triiodothyronine (T₃). Deficiency leads to goiter and hypothyroidism. Iron is for hemoglobin, calcium for bones, zinc for enzyme function. Iodized salt is a public health measure to ensure adequate iodine intake.

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The hormone that stimulates the pancreas to secrete bicarbonate is:
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Correct Answer: Option D


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