Of the Following Ecosystem Types, Which Have Been Impacted the Most

question 7

Multiple Choice

Of the following ecosystem types, which have been impacted the most by humans?

• A) wetland and riparian
• B) desert and high alpine
• C) taiga and second-growth forests
• D) tundra and arctic

---

Definitions:

Transport Proteins

Proteins involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.

Membrane

A biological barrier that controls the passage of substances in and out of cells and organelles.

Receptor

A protein molecule that receives chemical signals from outside a cell.

Tertiary Structure

Refers to the three-dimensional shape that a protein assumes after it folds, contributing to its functional properties.