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Channel proteins move molecules at what rate relative to carrier proteins?
ARoughly ten times slower
BRoughly the very same rate
CRoughly ten times quicker
DTens of times quicker
Answer & Solution
Correct answer: D. Tens of times quicker
1. Both are integral proteins that assist passage, but they work by different means.
2. Channel proteins facilitate diffusion at a rate of tens of millions of molecules per second.
3. Carrier proteins work at a rate of a thousand to a million molecules per second.
4. So the channel is faster by roughly one to four orders of magnitude, tens of times quicker at minimum.
5. The options claiming slower or equal invert or flatten a real difference.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 5 'Structure and Function of Plasma Membranes', sections 5.1-5.4_
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