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Which of the following is a unique structural characteristic of cardiac muscle cells?
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5. Cell Components
Introduction to Eukaryotic Organelles
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Which of the following organelles is primarily responsible for modifying, sorting, and packaging proteins for secretion in eukaryotic cells?
A
Mitochondrion
B
Golgi apparatus
C
Nucleus
D
Lysosome
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Understand the function of each organelle listed in the question: Mitochondrion, Nucleus, Lysosome, and Golgi apparatus.
Recall that the Golgi apparatus is responsible for modifying, sorting, and packaging proteins for secretion in eukaryotic cells. Proteins are transported to the Golgi apparatus after synthesis in the rough endoplasmic reticulum.
Recognize that the mitochondrion is primarily involved in energy production through cellular respiration, not protein modification or secretion.
Understand that the nucleus houses genetic material and is responsible for transcription and replication, but it does not directly modify or package proteins.
Note that lysosomes are involved in the breakdown and recycling of cellular waste and macromolecules, not in the modification or secretion of proteins.
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