Multiple Choice
Which of the following membrane transport processes requires a transport protein?
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6. The Membrane
Introduction to Membrane Transport
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Which of the following is not a type of mediated transport?
A
Simple diffusion
B
Endocytosis
C
Active transport
D
Facilitated diffusion
Verified step by step guidance1
Understand the concept of mediated transport: Mediated transport involves the movement of substances across a cell membrane with the help of transport proteins or other mechanisms.
Identify the types of mediated transport: Common types include facilitated diffusion, active transport, and endocytosis, all of which require some form of assistance to move substances across the membrane.
Define simple diffusion: Simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration without the need for transport proteins or energy input.
Compare simple diffusion with mediated transport: Simple diffusion does not require any assistance from transport proteins, whereas mediated transport does.
Conclude which option is not a type of mediated transport: Since simple diffusion does not involve transport proteins or energy, it is not considered a type of mediated transport.
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