Practice question
Question
A mutation causes extensive loss of the endoplasmic-reticulum network throughout a eukaryotic cell, while the mitochondria, Golgi apparatus and lysosomes initially remain structurally intact.
Which group of activities would be most directly reduced?
Explanation
ER contributes to intracellular transport and to the synthesis of proteins, lipoproteins and glycogen. Rough ER is associated with protein synthesis and secretion, while smooth ER synthesises lipids and lipid-like steroidal hormones.
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