Multiple Choice
In the context of eukaryotic cells, what is the primary function of the organelle labeled 'A' in the diagram, which is identified as the mitochondrion?
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5. Cell Components
Introduction to Eukaryotic Organelles
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Which aspect of cell function is primarily responsible for moving substances and signals among eukaryotic organelles?
A
DNA replication
B
Cell division
C
Vesicular transport
D
Protein synthesis
Verified step by step guidance1
Understand the problem: The question is asking which aspect of cell function is responsible for moving substances and signals among eukaryotic organelles. This involves understanding the mechanisms of intracellular transport in eukaryotic cells.
Clarify the options: DNA replication refers to the process of copying genetic material, which is not directly involved in moving substances or signals. Cell division is the process of creating new cells, which also does not directly address intracellular transport. Protein synthesis involves creating proteins, but it does not explain how substances or signals are moved between organelles.
Introduce the concept of vesicular transport: Vesicular transport is a cellular process where vesicles (small membrane-bound sacs) are used to move substances such as proteins, lipids, and signaling molecules between organelles like the endoplasmic reticulum, Golgi apparatus, and lysosomes.
Explain the mechanism: Vesicular transport involves the budding of vesicles from one organelle, their movement through the cytoskeleton (often guided by motor proteins), and their fusion with the target organelle. This ensures efficient communication and substance exchange between organelles.
Conclude why vesicular transport is the correct answer: Vesicular transport is the primary mechanism for moving substances and signals among eukaryotic organelles, making it the correct answer to the question.
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