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NBC 5.2 Interactive

5.2 Interactive notes. Cell junctions: tight, desmosomes, gap, and plasmodesmata

QuestionAnswer
Type of cell present in tight junction Epithelial cells (skin, nail, horn cells)
Type of cell present in desmosomes Eukaryotic animal cells
Type of cell present in gap junction Animal cells
Type of cell present in plasmodesmata Plants
Type of protein present in tight junction Membrane proteins
Tyoe of protein present in desmosomes Keratin and plaque proteins
Type of protein present in gap juncitons Connexons
Type of protein present in plasmodesmata Plasma and membrane integral proteins
Tight junctions function for the cell Holds together, maintains density, controls passage in spaces between cells
Desmosomes function for the cell Connects adjacent cells, and acts like a rivet (or button)
Gap Junctions function for the cell Cummunication
Plasmodesmatas function for the cell Permits diffusion of water, ions, small molecules, RNA, and proteins between connected cells. Also for communication
Relate structure and function: Tight Junction Proteins form a seal in the plasma membrane which prevents substances from entering between the space of the plasma membranes.
Relate structure and function: Desmosomes -Keratin streches across the cell and weilds itself to adjacent cells.-Dense structure on the cytoplasmic side of the plasma membrane
Relate structure and function: Gap Junction -Connexons spam the plasma membranes-Space is formed between epithelial cells
Relate structure and function: Plasmodesmata -ER goes through-It also goes through the cell wall
Type of tissue tight junctions are found in Epithelial tissue (skin, nail, horn cells, etc)
Type of tissue desmosomes are found in Epithelial tissue (skin, nail, horn cells, etc)
Type of tissue gap junctions are found in Muscule and nerve tissue
Type of tissue plasmodesmata are found in plant cells
Created by: BrookeC
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