NR507 the cell-Questions with Correct Answers/ Verified
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Course
NR507
Institution
NR507
cell to cell - And since most organs are multicellular, and including humans, cell to cell
communication is important to regulate growth and cell division, tissue organization, and to
coordinate all other cellular functions not only between adjacent cells, but also distant cells.
But cells do co...
NR507 the cell-Questions with Correct Answers/ Verified
cell to cell - ✔✔And since most organs are multicellular, and including humans, cell to cell
communication is important to regulate growth and cell division, tissue organization, and to
coordinate all other cellular functions not only between adjacent cells, but also distant cells.
But cells do communicate with each other by three different processes. - ✔✔gap junctures
contact signalling by plasma membrane bound receptors
remote signaling by secreted molecules
gap junctions This allows direct cell to cell contact via secreted chemicals that travel directly
between the connected cells. This is a very important way for cells, for example, cardiac muscle
within a specific organ to communicate and coordinate activity. - ✔✔This allows direct cell to cell
contact via secreted chemicals that travel directly between the connected cells. This is a very
important way for cells, for example, cardiac muscle within a specific organ to communicate and
coordinate activity.
contact signalling by plasma membrane bound receptors - ✔✔Secreted chemicals such as
hormones, neurotransmitters, cytokines can travel from cell to cell across near or far distances often
transport at via the bloodstream to bind to receptors on the target cell surface. This is a very
important way for all cells to control normal and in some cases also abnormal or tumor-type growth.
remote signaling by secreted molecules - ✔✔Secreted chemicals, again hormones, cytokines can
travel from cell to cell, across near or far distances often transported via the bloodstream and in
some cases actually enter directly into the target cell.
So what happens when the secreted chemical reaches its target cell by any of these 3 processes? -
✔✔Signal transduction, the process whereby chemical signals received on the surface of the cell
trigger a cascade of biochemical events within the cell. Signal transduction is analogous to what
happens when you make a phone call and somebody at the other end picks up that call.
cellular metabolism - ✔✔All of the chemical reactions that are occurring are part of maintaining
cellular function, and we refer to those as
cellular metabolism
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