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4. Extracellular Matrix of Animal Cells Intercellular Junctions Connections between Cells and Cellular Activities Bacteria, Archaea, and Eukaryote Cell Structure... > Connections between Cells and Cellular Activities Free to share, print, make copies and changes. Get yours at www.boundless.com www.boundless.com/microbiology?campaign_content=book_5777_section_56&campaign_term=Microbiology&utm_campaign=powerpoint&utm_ medium=direct&utm_source=boundless

5. The extracellular matrix of animal cells is made up of proteins and carbohydrates. Cell communication within tissue and tissue formation are main functions of the extracellular matrix of animal cells. Tissue communication is kick-started when a molecule within the matrix binds a receptor; the end results are conformational changes that induce chemical signals that ultimately change activities within the cell. Extracellular Matrix of Animal Cells Free to share, print, make copies and changes. Get yours at www.boundless.com www.boundless.com/microbiology/textbooks/alternative-to-microbiology-principles-and-explorations-8th-jacquelyn-g-black-0470646217- 9780470646212/bacteria-archaea-and-eukaryote-cell-structure-cell-structure-the-plasma-membrane-and-membrane-transport-4/connections- between-cells-and-cellular-activities-56/extracellular-matrix-of-animal-cells-329- 11461?campaign_content=book_5777_section_56&campaign_term=Microbiology&utm_campaign=powerpoint&utm_medium=direct&utm_source =boundless The Extracellular Matrix View on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure... > Connections between Cells and Cellular Activities

6. Plasmodesmata are intercellular junctions between plant cells that enable the transportation of materials between cells. A tight junction is a watertight seal between two adjacent animal cells, which prevents materials from leaking out of cells. Desmosomes connect adjacent cells when cadherins in the plasma membrane connect to intermediate filaments. Similar to plasmodesmata, gap junctions are channels between adjacent cells that allow for the transport of ions, nutrients, and other substances. Intercellular Junctions Free to share, print, make copies and changes. Get yours at www.boundless.com www.boundless.com/microbiology/textbooks/alternative-to-microbiology-principles-and-explorations-8th-jacquelyn-g-black-0470646217- 9780470646212/bacteria-archaea-and-eukaryote-cell-structure-cell-structure-the-plasma-membrane-and-membrane-transport-4/connections- between-cells-and-cellular-activities-56/intercellular-junctions-330- 11462?campaign_content=book_5777_section_56&campaign_term=Microbiology&utm_campaign=powerpoint&utm_medium=direct&utm_source =boundless Plasmodesmata View on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure... > Connections between Cells and Cellular Activities

7. Free to share, print, make copies and changes. Get yours at www.boundless.com Appendix

8. Key terms collagen Any of more than 28 types of glycoprotein that forms elongated fibers, usually found in the extracellular matrix of connective tissue. connexon An assembly of six connexins forming a bridge called a gap junction between the cytoplasms of two adjacent cells. extracellular matrix All the connective tissues and fibres that are not part of a cell, but rather provide support. occludin Together with the claudin group of proteins, it is the main component of the tight junctions. plasmodesma A microscopic channel traversing the cell walls of plant cells and some algal cells, enabling transport and communication between them. proteoglycan Any of many glycoproteins that have heteropolysaccharide side chains Free to share, print, make copies and changes. Get yours at www.boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...

9. The Extracellular Matrix The extracellular matrix consists of a network of proteins and carbohydrates. Free to share, print, make copies and changes. Get yours at www.boundless.com Connexions. "Print." CC BY 3.0 http://cnx.org/content/m44413/latest/Figure_04_06_01.jpg View on Boundless.comCC BY 3.0http://cnx.org/content/m44413/latest/Figure_04_06_01.jpgView on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...

10. Desmosomes A desmosome forms a very strong spot weld between cells. It is created by the linkage of cadherins and intermediate filaments. Free to share, print, make copies and changes. Get yours at www.boundless.com Connexions. CC BY 3.0 http://cnx.org/content/m44413/latest/Figure_04_06_04.jpg View on Boundless.comCC BY 3.0http://cnx.org/content/m44413/latest/Figure_04_06_04.jpgView on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...

11. Plasmodesmata A plasmodesma is a channel between the cell walls of two adjacent plant cells. Plasmodesmata allow materials to pass from the cytoplasm of one plant cell to the cytoplasm of an adjacent cell. Free to share, print, make copies and changes. Get yours at www.boundless.com Connexions. "Print." CC BY 3.0 http://cnx.org/content/m44413/latest/Figure_04_06_02.jpg View on Boundless.comCC BY 3.0http://cnx.org/content/m44413/latest/Figure_04_06_02.jpgView on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...

12. Tight Junctions Tight junctions form watertight connections between adjacent animal cells. Proteins create tight junction adherence. Free to share, print, make copies and changes. Get yours at www.boundless.com Connexions. CC BY 3.0 http://cnx.org/content/m44413/latest/Figure_04_06_03.jpg View on Boundless.comCC BY 3.0http://cnx.org/content/m44413/latest/Figure_04_06_03.jpgView on Boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...

13. Free to share, print, make copies and changes. Get yours at www.boundless.com Bacteria, Archaea, and Eukaryote Cell Structure... What is the role of the extracellular matrix of animal cells? A) The matrix is in charge of blood clotting in the human body. B) The matrix creates the proteins and collagen that are needed in tissue communication. C) The matrix works in the formation of tissues and allows cell communication within the tissues. D) It is solely in charge of changing the conformation of microfilaments inside the cell membrane.

14. Free to share, print, make copies and changes. Get yours at www.boundless.comwww.boundless.com OpenStax OER. "Connections between Cells and Cellular Activities." CC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latestCC BY 3.0http://cnx.org/content/m44413/latest/?collection=col11448/latest Bacteria, Archaea, and Eukaryote Cell Structure... What is the role of the extracellular matrix of animal cells? A) The matrix is in charge of blood clotting in the human body. B) The matrix creates the proteins and collagen that are needed in tissue communication. C) The matrix works in the formation of tissues and allows cell communication within the tissues. D) It is solely in charge of changing the conformation of microfilaments inside the cell membrane.

15. Free to share, print, make copies and changes. Get yours at www.boundless.com Bacteria, Archaea, and Eukaryote Cell Structure... Which of the following junctions is matched correctly with its function? A) desmosome: transports nutrients in plant cells B) plasmodesma: pass electrical signals through heart muscle C) tight junction: prevents materials from leaking between cells D) gap junction: connects adjacent cells via cadherins

16. Free to share, print, make copies and changes. Get yours at www.boundless.comwww.boundless.com Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/CC BY-SA 3.0http://www.boundless.com/ Bacteria, Archaea, and Eukaryote Cell Structure... Which of the following junctions is matched correctly with its function? A) desmosome: transports nutrients in plant cells B) plasmodesma: pass electrical signals through heart muscle C) tight junction: prevents materials from leaking between cells D) gap junction: connects adjacent cells via cadherins

17. Attribution Connexions. "Connections between Cells and Cellular Activities." CC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latestCC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latest Wiktionary. "proteoglycan." CC BY-SA 3.0 http://en.wiktionary.org/wiki/proteoglycanCC BY-SA 3.0http://en.wiktionary.org/wiki/proteoglycan Wiktionary. "collagen." CC BY-SA 3.0 http://en.wiktionary.org/wiki/collagenCC BY-SA 3.0http://en.wiktionary.org/wiki/collagen Wiktionary. "extracellular matrix." CC BY-SA 3.0 http://en.wiktionary.org/wiki/extracellular+matrixCC BY-SA 3.0http://en.wiktionary.org/wiki/extracellular+matrix Connexions. "Connections between Cells and Cellular Activities." CC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latestCC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latest Connexions. "Connections between Cells and Cellular Activities." CC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latestCC BY 3.0 http://cnx.org/content/m44413/latest/?collection=col11448/latest Wiktionary. "connexon." CC BY-SA 3.0 http://en.wiktionary.org/wiki/connexonCC BY-SA 3.0http://en.wiktionary.org/wiki/connexon Wiktionary. "plasmodesma." CC BY-SA 3.0 http://en.wiktionary.org/wiki/plasmodesmaCC BY-SA 3.0http://en.wiktionary.org/wiki/plasmodesma Wikipedia. "occludin." CC BY-SA 3.0 http://en.wikipedia.org/wiki/occludinCC BY-SA 3.0http://en.wikipedia.org/wiki/occludin Free to share, print, make copies and changes. Get yours at www.boundless.com Bacteria, Archaea, and Eukaryote Cell Structure...