A Renewable Energy Source That Taps into Heat Produced Deep

question 61

Multiple Choice

A renewable energy source that taps into heat produced deep below ground is called

• A) hydroelectric.
• B) geothermal.
• C) solar.
• D) "subterranean" wind.
• E) fossil fuel.

---

Definitions:

Lipid-Soluble Molecules

Molecules capable of dissolving in lipids or fats, often capable of easily passing through cell membranes.

Lipid Bilayer

The fundamental structure of cell membranes, comprising two layers of lipids primarily phospholipids.

Membrane Channels

Protein structures that span the cell membrane, allowing the selective passage of ions and molecules in and out of the cell.

Hypertonic

Solution that causes cells to shrink.