8/27 Bio211

Spontaneous Generation (Abiogenesis)

The belief that living organisms can arise spontaneously from non-living or decomposing matter.

Biogenesis

The principle that living organisms arise only from preexisting living matter.

Nutrient Broth

A liquid growth medium containing essential nutrients used to culture microbes in the lab.

Turbidity

Cloudiness in a liquid broth, indicating microbial growth.

Fermentation Mechanics

Identified that microorganisms, specifically yeast, are responsible for converting sugars into alcohol and carbon dioxide.

Pasteurization

A process of heating liquids to a specific temperature for a set time to eliminate pathogens without altering the taste or quality.

Germ Theory of Disease

The idea that specific microorganisms cause specific infectious diseases.

Swan-Neck Flask Experiment

Louis Pasteur's experiment that allowed air in while keeping airborne microbes out, proving that microbes are carried in the air.

Acetic Acid Bacteria

Bacteria that metabolize ethanol and produce acetic acid, causing spoilage.

Key Contributions of Louis Pasteur

Included disproving spontaneous generation, fermentation mechanics, pasteurization, and contributions to the germ theory of disease.

Spontaneous Generation (Abiogenesis)

The belief that living organisms can arise spontaneously from non-living or decomposing matter.

Biogenesis

The principle that living organisms arise only from preexisting living matter.

Nutrient Broth

A liquid growth medium containing essential nutrients used to culture microbes in the lab.

Turbidity

Cloudiness in a liquid broth, indicating microbial growth.

Fermentation Mechanics

Identified that microorganisms, specifically yeast, are responsible for converting sugars into alcohol and carbon dioxide.

Pasteurization

A process of heating liquids to a specific temperature for a set time to eliminate pathogens without altering the taste or quality.

Germ Theory of Disease

The idea that specific microorganisms cause specific infectious diseases.

Swan-Neck Flask Experiment

Louis Pasteur's experiment that allowed air in while keeping airborne microbes out, proving that microbes are carried in the air.

Acetic Acid Bacteria

Bacteria that metabolize ethanol and produce acetic acid, causing spoilage.

Key Contributions of Louis Pasteur

Included disproving spontaneous generation, fermentation mechanics, pasteurization, and contributions to the germ theory of disease.