Multiple Choice
Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through:
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2. Cell Chemistry & Cell Components
Cell Junctions
Multiple Choice
Which of these cell junctions forms a barrier to the passage of materials?
A
Adherens junctions
B
Gap junctions
C
Desmosomes
D
Tight junctions
Verified step by step guidance1
Understand the function of each type of cell junction: Adherens junctions, Gap junctions, Desmosomes, and Tight junctions.
Adherens junctions connect the actin cytoskeleton of one cell to another, providing mechanical stability.
Gap junctions allow for communication between cells by permitting the passage of ions and small molecules.
Desmosomes provide strong adhesion between cells, particularly in tissues that experience mechanical stress.
Tight junctions create a seal between adjacent cells, preventing the passage of materials between them, thus forming a barrier.
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