[Campbell Biology P.142] A researcher observes a eukaryotic cell that appears to have a defe... | Practice Question
A researcher observes a eukaryotic cell that appears to have a defect in its ability to properly fold and modify proteins after synthesis. Based on the 'Key Concepts' and the 'Energy and matter transformations' sections, which cellular system is most likely impaired?
Explanation
Key Concept 6.4 states 'The endomembrane system regulates protein traffic and performs metabolic functions.' Additionally, the 'Energy and matter transformations' section notes that 'A system of internal membranes synthesizes and modifies proteins, lipids, and carbohydrates,' which refers to components of the endomembrane system. Thus, defects in protein folding and modification point to an impaired endomembrane system.