West Nile Virus Was Introduced into the United States in 1999

question 17

Multiple Choice

West Nile Virus was introduced into the United States in 1999 and became an endemic infection over the next several years.Which of the following wild animal populations does this virus circulate in?

• A) Bats
• B) Bees
• C) Birds
• D) Beetles
• E) Bears

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Definitions:

Neuronal Membrane

The lipid bilayer that surrounds a neuron, maintaining the cell's structure and contributing to its function by regulating the movement of ions and molecules.

Activation Gate

In the context of cell membrane channels, this refers to a mechanism that opens or closes ion channels in the cell membrane in response to physiological stimuli.

Transport Pump

Proteins in cell membranes that use energy to move substances across the membrane, often against a concentration gradient.

Saltatory Conduction

The transmission of a neural impulse along a myelinated neuron; ion activity at one node depolarizes the next node along the axon.