Problem: Which is the correct order of events during auxin-mediated cell elongation?a) Proton pump gene expression → expansin activation → ATP hydrolysis → H+ movement into cell wallb) expansin activation → proton pump gene expression → H+ movement into cell wall → ATP hydrolysisc) ATP hydrolysis → expansin activation → proton pump gene expression → H+ movement into cell walld) Proton pump gene expression → ATP hydrolysis → H+ movement into cell wall → expansin activation

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Which is the correct order of events during auxin-mediated cell elongation?

a) Proton pump gene expression → expansin activation → ATP hydrolysis → H+ movement into cell wall

b) expansin activation → proton pump gene expression → H+ movement into cell wall → ATP hydrolysis

c) ATP hydrolysis → expansin activation → proton pump gene expression → H+ movement into cell wall

d) Proton pump gene expression → ATP hydrolysis → H+ movement into cell wall → expansin activation

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