Examine cellular communication and signal transduction.

Question 1

What are the four main reasons for cellular communication?

Answer 1

Maintain Homeostasis, Regulate growth and division, develop and organize into cells to form types of tissue, and coordination of their function

Question 2

What are the 3 main ways cells communicate?

Answer 2

(1) they display plasma membrane–bound signalling molecules (receptors) that affect the cell itself and other cells in direct physical contact ( Figure 1.13A ); (2) they affect receptor proteins inside the target cell, and the signal molecule has to enter the cell to bind to them ( Figure 1.13B ); and (3) they form protein channels (gap junctions) that directly coordinate the activities of adjacent cells

Power-Kean, Kelly,Zettel, Stephanie,El-Hussein, Mohamed Toufic,Huether, Sue E.,McCance, Kathryn L.. Huether and McCance’s Understanding Pathophysiology, Canadian Edition - E-Book (p. 103). Elsevier Health Sciences. Kindle Edition.

Question 3

How do cells use contact signalling through plasma membrane bound receptors?

Answer 3

Display plasma membrane receptors, these bonding ports impact activities in the cell and other cells that are in contact with the cell

Question 4

How do cells use remote signalling by secreted molecules?

Answer 4

Impact receptor proteins inside the target cell, molecule needs to be brought into the cell for that to happen

Question 5

How do cells use contact signalling via Gap Junction?

Answer 5

Cells form protein channels (gap junctions) that directly coordinate the activities of adjacent cells