Multiple Choice
Which of the following processes requires a carrier protein?
6. Cell Membrane & Transport
Types of Small Molecule Transport Review
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Which of the following transport mechanisms require energy?
A
Active transport.
B
Facilitated diffusion.
C
Passive diffusion.
D
a&b.
E
None of the above.
Verified step by step guidance1
Understand the different types of transport mechanisms: Active transport, facilitated diffusion, and passive diffusion.
Active transport is a process that moves molecules across a cell membrane from a region of lower concentration to a region of higher concentration, against the concentration gradient. This process requires energy, usually in the form of ATP.
Facilitated diffusion is a passive transport mechanism where molecules move across the cell membrane through protein channels or carriers, from a region of higher concentration to a region of lower concentration, without the use of energy.
Passive diffusion is the movement of molecules across the cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.
Identify which of the given options require energy: Since active transport requires energy, the correct answer is option 'a'.
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