Multiple Choice
Which of the following is not a characteristic of carrier-mediated transport?
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6. The Membrane
Introduction to Membrane Transport
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Which of the following membrane transport processes requires a transport protein?
A
Osmosis
B
Endocytosis
C
Simple diffusion
D
Facilitated diffusion
Verified step by step guidance1
Understand the concept of membrane transport processes. Membrane transport can be passive or active, and involves the movement of substances across the cell membrane.
Identify the types of passive transport: Osmosis, simple diffusion, and facilitated diffusion. Passive transport does not require energy input from the cell.
Recognize that osmosis is the movement of water across a semipermeable membrane and does not require a transport protein.
Understand that simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration directly through the lipid bilayer, without the need for a transport protein.
Learn that facilitated diffusion involves the movement of molecules across the cell membrane via transport proteins. These proteins help substances that cannot directly pass through the lipid bilayer due to size or polarity.
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