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Connections Between Cells Plants and animals are made up of billions of cells. These cells are surrounded by extracellular components that facilitate their interactions and provide a suitable environment for the construction and protection of tissues. Part A - Comparing the extracellular environments of plants and animals The cellular organization and extracellular environments of plants and animals are very different. Drag the labels to their appropriate locations in the table below. Labels of Group 2 may be used more than once. ► View Available Hint(s) Reset Help Extracellular function Structure Plant or Animal? gap junctions 1. Membrane protein complexes that strengthen the adhesion between adjacent cells, like rivets, to protect against pulling forces desmosomes Group 2 tight junctions plasmodesmata 2. Small channels that form across the plasma membranes of adjacent cells; especially important in intercellular communication Group 1 animal cellulose 3. Membrane proteins that create a watertight seal between cells Group 1 Group 2 collagen 4. Small channels between cells that are otherwise surrounded by walls; enable movement of water and solutes between cells Group 1 Group 2 plant 5. A polysaccharide that is used to synthesize cell walls, which protect cells and help maintain their shape Group 1 Group 2 animal 6. Long fibers of protein found in the extracellular matrix that provide structural support for cells Group 1 Group 2 Submit << Return to Assignment Provide Feedback

Connections Between Cells
Plants and animals are made up of billions of cells. These cells are surrounded by extracellular components that facilitate their interactions and provide a suitable environment for the construction and protection of tissues.
Part A - Comparing the extracellular environments of plants and animals
The cellular organization and extracellular environments of plants and animals are very different.
Drag the labels to their appropriate locations in the table below. Labels of Group 2 may be used more than once.
► View Available Hint(s)
Reset Help
Extracellular function
Structure
Plant or Animal?
gap junctions
1. Membrane protein complexes that strengthen the adhesion
between adjacent cells, like rivets, to protect against pulling
forces
desmosomes
Group 2
tight junctions
plasmodesmata
2. Small channels that form across the plasma membranes of
adjacent cells; especially important in intercellular
communication
Group 1
animal
cellulose
3. Membrane proteins that create a watertight seal between cells
Group 1
Group 2
collagen
4. Small channels between cells that are otherwise surrounded by
walls; enable movement of water and solutes between cells
Group 1
Group 2
plant
5. A polysaccharide that is used to synthesize cell walls, which
protect cells and help maintain their shape
Group 1
Group 2
animal
6. Long fibers of protein found in the extracellular matrix that
provide structural support for cells
Group 1
Group 2
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