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Which outcome arises when a protein molecule misfolds within a cell's endoplasmic reticulum?

A)Activation of the unfolded protein response
B)Increased ATP production via oxidative phosphorylation
C)Enhanced lipid synthesis for membrane repair
D)Stimulation of cell division by growth factors

💡 Explanation

When a protein misfolds, exposed hydrophobic regions trigger the unfolded protein response (UPR) because chaperones cannot properly assist folding. Therefore, the UPR activates to restore homeostasis, rather than increasing ATP, lipid synthesis, or cell division, which would not directly address protein misfolding.

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