Louis Pasteur is famous for his work on: MCQ with Answer and Explanation

Louis Pasteur is famous for his work on:
A. Theory of evolution
B. Pasteurization and disproving spontaneous generation
C. Laws of inheritance
D. Discovery of penicillin
Answer: Option B
Solution (By JKSSB Mock Tests)
Louis Pasteur, a French microbiologist, is famous for several groundbreaking contributions. He developed the process of pasteurization (heating liquids to kill harmful microbes). He also conclusively disproved the theory of spontaneous generation using his famous swan-neck flask experiment, demonstrating that life only arises from pre-existing life (biogenesis). He also developed vaccines for rabies and anthrax.

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Practice More Biology Questions

Question #1
The condition caused by excessive secretion of thyroxine is:
A. Simple goiter
B. Cretinism
C. Exophthalmic goiter (Graves' disease)
D. Myxedema

Correct Answer: Option C


Explanation:
Graves' disease is an autoimmune hyperthyroidism characterized by exophthalmos (bulging eyes), weight loss, and tachycardia. Myxedema is adult hypothyroidism, cretinism congenital hypothyroidism, simple goiter iodine deficiency.

This question belongs to: Science Biology
Question #2
The organ that removes old red blood cells and stores iron is the:
A. Bone marrow
B. Spleen
C. Kidney
D. Liver

Correct Answer: Option C


Explanation:
The spleen filters blood, removing aged or damaged RBCs, recycles iron, and stores platelets. The liver also processes hemoglobin products, but the spleen is the primary organ for RBC removal. The kidneys filter blood but don't remove RBCs.

This question belongs to: Science Biology
Question #3
Mendel's experiments were performed on which plant?
A. Rice
B. Maize
C. Wheat
D. Pea (Pisum sativum)

Correct Answer: Option D


Explanation:
Gregor Mendel conducted his classic hybridization experiments on garden pea (Pisum sativum) between 1856 and 1863, establishing the fundamental laws of inheritance. He selected seven contrasting characters.

This question belongs to: Science Biology