Campbell Biology in Focus (2nd Edition)
Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 5.2, Problem 3CC

MAKE CONNECTIONS Aquaporins exclude passage of hydronium ions (H3O+), but some aquaporins allow passage of glycerol a three-carbon alcohol (see Figure 3.13) as well as H2O. Since H3O+ is closer in size to water than glycerol is, yet cannot pass through, what might be the basis of this selectivity?

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