Practice question

MCQ

Question

A protein is synthesised for secretion outside a eukaryotic cell. Which sequence most logically represents its movement through the cell?

Options

Choose one · Correct answer highlighted

Ribosome on RER → ER-derived vesicle → cis face of Golgi → Golgi cisternae → trans face → secretion Correct Free ribosome → lysosome → trans face of Golgi → cis face → secretion Nucleolus → SER → mitochondrial matrix → Golgi apparatus → secretion Ribosome on RER → trans face of Golgi → cis face → nuclear pore → secretion

Explanation

Secretory proteins are synthesised on ribosomes attached to RER. Materials from the ER reach the cis or forming face of the Golgi, move through its cisternae and are released from the trans or maturing face.

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