Question

Describe the three characteristics of Carrier-Mediated Transport.

A) Movement of solutes along a concentration gradient, passive transport, and facilitated diffusion.
B) Utilizes energy, active transport, and pumps substances against a concentration gradient.
C) Involves the movement of water molecules, osmosis, and diffusion.
D) Requires a channel protein, passive diffusion, and movement of solutes with the concentration gradient.

Answer 1

Carrier-Mediated Transport involves the facilitated movement of solutes along a gradient, requires specific proteins like channel or carrier proteins, and can be either passive or active, with the latter consuming energy to transport substances against their gradient.D) Requires a channel protein, passive diffusion, and movement of solutes with the concentration gradient.

Step-by-step explanation:

The three characteristics of Carrier-Mediated Transport include:

• Movement of solutes along a concentration gradient, which can occur via passive transport such as facilitated diffusion.
• Some forms of Carrier-Mediated Transport use energy, which is identified as active transport, moving substances against their concentration gradient.
• Carrier-Mediated Transport requires a specific protein, like a channel or carrier protein, to assist the passage of solutes across the cell membrane.

Facilitated diffusion is a type of passive transport where substances move down their concentration gradient through membrane proteins, and like passive diffusion, does not require energy. Conversely, active transport requires ATP to move substances against their concentration gradient, often utilizing proteins that act as pumps. These mechanisms are crucial for the regulation of substance movement into and out of cells, letting the cell maintain homeostasis.