Multiple Choice
What are the two main types of transport across cell membranes?
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6. The Membrane
Passive vs. Active Transport
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What is the similarity between active transport and facilitated diffusion?
A
Both move substances from an area of low concentration to high concentration.
B
Both require a membrane protein to transport substances across the cell membrane.
C
Both occur without the need for a concentration gradient.
D
Both processes require energy in the form of ATP.
Verified step by step guidance1
Identify the key characteristics of active transport: it moves substances against their concentration gradient (from low to high concentration) and requires energy in the form of ATP.
Identify the key characteristics of facilitated diffusion: it moves substances down their concentration gradient (from high to low concentration) and does not require energy.
Recognize that both active transport and facilitated diffusion involve the use of membrane proteins to transport substances across the cell membrane.
Understand that while active transport requires energy, facilitated diffusion does not, which is a major difference between the two processes.
Conclude that the similarity between active transport and facilitated diffusion is that both require a membrane protein to transport substances across the cell membrane.
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