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Which organelle is responsible for modifying and storing proteins?

  1. Golgi apparatus

  2. Mitrochondria

  3. Ribosome

  4. Smooth endoplasmic reticulum

The correct answer is: Golgi apparatus

The correct answer is A. Golgi apparatus is responsible for modifying and storing proteins because it contains a series of flattened, stacked cisternae that function as a processing and distribution center for proteins and lipids received from the endoplasmic reticulum. Additionally, the other options are incorrect because they have different roles in the cell. Mitochondria are responsible for producing energy, ribosomes are responsible for protein synthesis, and smooth endoplasmic reticulum is responsible for lipid synthesis and detoxification. Therefore, they are not directly involved in the modification and storage of proteins.