Movement of Molecules Down Their Concentration Gradient (I

question 5

Multiple Choice

Movement of molecules down their concentration gradient (i.e., from a region of high concentration to a region of low concentration) using protein carriers is called

• A) osmosis
• B) passive diffusion
• C) facilitated diffusion
• D) active transport

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Definitions:

Climate Change

Long-term significant changes in the temperature, precipitation, and patterns of weather across the globe, often attributed to human activities.

Iron Formation

A geological formation consisting of layers of iron minerals, often found as banded iron formations which are significant sources of iron ore.

Seawater

The saltwater that fills the oceans and seas, covering approximately 71% of Earth's surface.

Silica-rich Organisms

Refers to organisms that utilize silica (SiO2) in their structural makeup, often found in the cell walls or skeletons, such as diatoms and some sponges.