Which scientist contributed to germ theory and pioneered pasteurization?

Which scientist contributed to germ theory and pioneered pasteurization?

• A. Charles Darwin
• B. Louis Pasteur
• C. Isaac Newton
• D. Gregor Mendel

Answer: (B)

This question tests understanding of how germ theory developed and how pasteurization began. Louis Pasteur showed that microorganisms in the air and surrounding environments can contaminate nutrients, providing crucial evidence for germ theory and helping disprove spontaneous generation. He linked microbial life to both fermentation and disease, showing that microbes influence illness and spoilage. Building on this, he devised pasteurization—briefly heating liquids like milk to kill harmful bacteria and prevent spoilage and disease transmission. These contributions—advancing germ theory and introducing pasteurization—make him the correct answer. The other scientists listed made major contributions in other fields: Darwin with evolution, Newton with physics, Mendel with genetics.

This question tests understanding of how germ theory developed and how pasteurization began. Louis Pasteur showed that microorganisms in the air and surrounding environments can contaminate nutrients, providing crucial evidence for germ theory and helping disprove spontaneous generation. He linked microbial life to both fermentation and disease, showing that microbes influence illness and spoilage. Building on this, he devised pasteurization—briefly heating liquids like milk to kill harmful bacteria and prevent spoilage and disease transmission. These contributions—advancing germ theory and introducing pasteurization—make him the correct answer. The other scientists listed made major contributions in other fields: Darwin with evolution, Newton with physics, Mendel with genetics.