Before Ehrilich Began a Systematic Search for a Chemical to Kill

question 45

Multiple Choice

Before Ehrilich began a systematic search for a chemical to kill specific bacteria,the only chemotherapies available were substances derived from medicinal plants. What distinguished Ehrlich's chemotherapy research?

• A) he systematically tested hundred of compounds, for their ability to destroy specific bacteria without damaging surrounding tissue
• B) he used metals, such as antimony and mercury to treat diseases
• C) he inoculated his own son with fluid from a cowpox blister
• D) he introduced cinchona tree bark, a native American remedy to treat malaria

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Definitions:

Mass Extinctions

Mass extinctions are events in Earth's history when a significant, widespread, and rapid loss of biodiversity occurs due to various causes, such as catastrophic environmental changes.

Climate Belts

Regions on Earth characterized by distinct climate conditions, such as tropical, temperate, and polar zones.

Forest Diversity

The variety and abundance of different plant and animal species within forest ecosystems.

Ozone Hole

A significant depletion of the ozone layer in the Earth's stratosphere, primarily over Antarctica, resulting from the emission of chlorofluorocarbons (CFCs).