According to the Acid-Growth Hypothesis, Auxin Causes Increased Acidity in Cell

question 34

Multiple Choice

According to the acid-growth hypothesis, auxin causes increased acidity in cell walls, which then activates ____ that disrupt(s) bonds between cellulose microfibrils, allowing cell expansion.

• A) a membrane potential
• B) AUX1 transporters
• C) proteins called expansins
• D) an mRNA
• E) K⁺ions

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