QQuestionBiology
QuestionBiology
Explain why facilitated diffusion does not require energy from a cell.
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Step 1I'll solve this problem step by step, explaining why facilitated diffusion does not require cellular energy:
Step 2: Understanding Diffusion
Facilitated diffusion is a passive transport mechanism where molecules move across a cell membrane through protein channels or carrier proteins. The key characteristic is movement from an area of high concentration to low concentration.
Final Answer
Facilitated diffusion does not require cellular energy because molecules naturally move down their concentration gradient through protein channels, driven by spontaneous thermodynamic processes.
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