Term
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Definition
| animal cells that make stable, elaborate cell-cell connections |
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Term
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Definition
| joins an actin bundle in one cell to a similar bundle in a neighboring cell |
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Term
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Definition
• rivets that link cytoskeletons of adjacent animal cells
o analogous to rivets that hold pieces of sheet metal together
o formed by proteins that form a physical link between cytoskeletons of adjacent cells |
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Term
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Definition
• any of a class of cell-surface proteins involved in cell adhesion and important for coordinating movements of cells during embryological development
o facilitate selective adhesion of similar cells to each other |
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Term
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Definition
• direct connections between cytoplasm of adjacent plant cells
• at these connections, plasma membrane and cytoplasm are continuous
• allow for sharing of cytoplasm and coordination of activity between two adjacent plant cells
• create gaps that connect plant cells
• communication portals |
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Term
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Definition
• protein-lined holes between some types of animal cells that allow for cytoplasmic communication
• create gaps that connect animal cells
• allows the passage of small water-soluble ions and molecules |
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Term
| cells attach to ECM via _________, which are linked to the cytoskeleton inside the cell |
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Definition
| transmembrane integrin proteins |
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Term
| extracellular matrix (ECM) |
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Definition
• in animals
• mostly collagen (a protein)
• collagen surrounded by gelatinous polysaccharides |
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Term
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Definition
polysaccharide-rich substance secreted by bacteria or other unicellular organisms
encases the organism and protects them |
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Term
| plant cells are held together by ______ |
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Definition
| a middle lamina that is made of gelatinous pectins. |
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Term
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Definition
| form a watertight seal between two animal cells, forming barriers in regions like the lining of the digestive tract |
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Term
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Definition
• if hydrophilic, will be a cell-surface receptor
• if hydrophobic, will use an intracellular receptor |
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