In the Late 1960s, Carroll Williams and Karel Salma Discovered

question 103

Multiple Choice

In the late 1960s, Carroll Williams and Karel Salma discovered that the insect Pyrrhocoris apterus, when grown in jars with paper towels made from balsam fir, underwent several extra larval molts and finally died without completing metamorphosis. Further investigation led to the conclusion that the fir trees synthesize a hormonal analog that acts as an insecticide. Which hormone is this natural insecticide mimicking?

• A)ecdysone
• B)juvenile hormone
• C)PTTH (prothoracicotropic hormone)

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Definitions:

Diffuse Costs

Diffuse costs are expenses that are spread out and not easily attributed to a single product, project, or activity, often indirect in nature.

Unintended Consequences

Outcomes that are not the ones foreseen or intended by a purposeful action.

Domestic Clothing Factories

Factories located within a country's borders that manufacture clothing and apparel for local consumption or export.

Overseas Operations

Business activities or processes conducted in foreign countries outside of a company's home country.