Multiple Choice
Extracellular matrix proteins are produced by ribosomes in which part of a eukaryotic cell?
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5. Cell Components
Endomembrane System: Protein Secretion
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Which organelle completes protein modifications and packages the protein for export?
A
Golgi apparatus
B
Rough endoplasmic reticulum
C
Lysosome
D
Mitochondrion
Verified step by step guidance1
Begin by understanding the role of each organelle listed in the options. The rough endoplasmic reticulum (RER) is involved in the synthesis of proteins, particularly those that are to be secreted or inserted into membranes.
Next, consider the function of the Golgi apparatus. It is responsible for modifying, sorting, and packaging proteins for secretion or delivery to other organelles.
The lysosome is an organelle that contains digestive enzymes and is involved in breaking down waste materials and cellular debris.
The mitochondrion is known as the powerhouse of the cell, generating ATP through cellular respiration, and is not involved in protein modification or packaging.
Based on these functions, identify the organelle that completes protein modifications and packages the protein for export. The Golgi apparatus is the organelle that performs these tasks, making it the correct answer.
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