Figure 41-2 Refer to the Accompanying Figure

question 5

Multiple Choice

Figure 41-2 Refer to the accompanying figure. What structure is designated by label B?

• A) activation gate
• B) inactivation gate
• C) modulatory sensor
• D) transport pump
• E) transport sensor

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Definitions:

Nonpermeable

Materials that do not allow fluids to pass through them, preventing the movement of water or other substances.

Groundwater

Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations.

Water Table

The level below the Earth's surface where the ground is completely saturated with water, marking the boundary between the unsaturated soil above and the saturated zone below.

Permeable Rock

Rock that allows water to pass through it due to the presence of spaces, or pores, within its structure.