All of the Following Statements About Biological Transmission Are True

question 4

Multiple Choice

All of the following statements about biological transmission are true except

• A) The pathogen reproduces in the vector.
• B) The pathogen may require the vector as a host.
• C) The pathogen may enter the host in the vector's feces.
• D) Houseflies are an important vector.
• E) The pathogen may be injected by the bite of the vector.

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Definitions:

Breathing

The process of inhaling and exhaling air to facilitate gas exchange within the body.

Tissue Capillaries

The smallest blood vessels in the body, located within the tissues, where gas and nutrient exchange occur.

Oxygen

A chemical element with symbol O and atomic number 8, essential for most life forms on Earth as a critical component of the air we breathe.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.