How did Louis Pasteur’s experiments lead to new scientific understandings of germs? A. Experiments with cooking food showed that disease-carrying germs in food could be killed when heated. B. Experiments with different magnification lenses showed that germs were real and could be observed. C. Experiments with animals showed that dominant genes could lead to risks of disease. D. Experiments with shallow dishes showed that groups of germs could be grown so they could be seen without microscopes.

A.Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.

Explanation:

Louis Pasteur (1822-1895) is regarded as the father of immunology. He extensively studied microbes and their effect on food. He discovered that microorganisms were responsible for the spoilage of food.

His most important discovery was the fact that heating wine to 55°C will lead to the death of microorganisms and prevented wine from spoiling and did not affect its taste. This process is known as pasteurization.