Class Notes (834,026)
Canada (508,290)
Biology (2,907)
BIO1140 (688)
A L L (36)
Lecture

Cell to Cell Signalling.docx

11 Pages
28 Views
Unlock Document

Department
Biology
Course
BIO1140
Professor
A L L
Semester
Fall

Description
Cell to Cell Signalling Lecture NotesThe elements of a signalling systemoTypes of cell communicationGap junctions and plasmodesmata are direct communication sourcesContactbehaviour of cells canbe adjustedChemical messengers chemicals that are synthesised by one cells and are used to affect the behaviour of other cells ReceptionReceptormembrane cytosolic or nuclearCan be on membrane of cell or within the cell in nucleus or cytoplasmWhen first messenger binds to receptor it causes it to undergo a series of steps that causes changesEnables cells to respond to the signal without it a cell cannot respond to a signalActivites of cells can be regulated by signalling pathwaysTransductionPrimary messenger binds to receptor and causes Involves converting primary signal into a primary responseSignalling pathway has to be terminated at the appropriate time If the signalling pathway cannot be terminated then the cell is going to always respond to that signal continuouslySignalling molecule first messenger Signalling cascades and second messengersChanges behaviour of the target cellResponse Changes in gene expressionChanges in activities of enzymes transcription factors or other regulatory proteins transporters cytoskeleton etcTermination Pop QuizoWhat is signal transduction and why is it significantThe process of converting the signal primary messenger into a cellular response oProvides three examples of cellular examples of cellular activities that can be altered in response to a signalling moleculeGene expressionApoptosisCytoskeletons can grow
More Less

Related notes for BIO1140

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit