Textbook Question
What is the benefit of having some of the cellular organelles enclosed by a membrane similar to the plasma membrane?
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2. Cell Chemistry & Cell Components
Introduction to Eukaryotic Organelles
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Using the map above, which of the following is NOT a component of the cytoskeleton in eukaryotic cells?
A
Intermediate filaments.
B
Microtubules.
C
Tight junctions.
D
Microfilaments.
Verified step by step guidance1
Understand the components of the cytoskeleton: The cytoskeleton in eukaryotic cells is composed of three main types of protein filaments: microfilaments, intermediate filaments, and microtubules.
Define each component: Microfilaments are composed of actin and are involved in cell movement and shape. Intermediate filaments provide mechanical support for the cell. Microtubules are involved in cell division and intracellular transport.
Identify the function of tight junctions: Tight junctions are not part of the cytoskeleton. They are specialized connections between adjacent cells that prevent the passage of materials between cells.
Compare the components: Since microfilaments, intermediate filaments, and microtubules are all part of the cytoskeleton, and tight junctions are not, identify tight junctions as the component that does not belong.
Conclude the analysis: Based on the definitions and functions, determine that tight junctions are not a component of the cytoskeleton in eukaryotic cells.
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