Biology > LECTURE SLIDES/NOTES > Lecture Materials > University of Louisville BIO 240 Ch 11 Cell Signaling Notes (All)

Also available in bundle ( Click Here )

Lecture Materials > University of Louisville BIO 240 Ch 11 Cell Signaling Notes

Document Content and Description Below

University of Louisville BIO 240 Ch 11 Cell Signaling Notes Lecture Notes  Local and Long Distance Signaling o Communication between cells using gap junctions (animal cells) or plasmodesmata ... (plant cells), as well as cell to cell recognition  The Three Stages of Cell Signaling 1. Reception 1. Transduction 2. Response  Reception - A signaling molecule binds to a receptor protein, causing it to change shape o The binding between a signal molecule (ligand) and receptor is highly specific o A shape change in a receptor is often the initial transduction of the signal o Most signal receptors are plasma membrane proteins  Receptors in Plasma Membrane  (kinase - enzymes that phosphorylate)  Transduction: Cascades of molecular interactions relay signals from receptors to target molecules in the cell o Signal Transduction usually involves multiple steps  Protein Phosphorylation and dephosphorylation o In many pathways, the signal is transmitted by a cascade of protein phosphorylation  Apoptosis integrates multiple cell-signaling pathways o Apoptosis is programmed or controlled cell suicide AP Bio Notes Cell Signaling  Synthesis, release, transport of signaling molecules o Neurotransmitters, hormones, etc. o Ligand binds to a specific receptor  Reception of Information by target cells  Signal Transduction o Receptor converts extracellular signal into intracellular signal o Causes change in cell  Response by the cell Signaling Molecules  Local Regulators - work locally  Neurotransmitters - within the nervous system (synaptic cleft)  Hormones - move greater distances (secreted in glands) Local Regulators o Paracrine Regulation - Diffuse through interstitial fluid, act on nearby cells  Examples - histamine, growth factors, prostaglandins, nitric oxide Hormones o Chemical Messengers; in plants and animals o Secreted by endocrine glands; in animals o Transported by blood; to target cells Receptors  Specific Shape [Show More]

Last updated: 3 years ago

Preview 1 out of 3 pages

Buy Now

Instant download

We Accept:

Preview image of Lecture Materials > University of Louisville BIO 240 Ch 11 Cell Signaling Notes document

Buy this document to get the full access instantly

Instant Download Access after purchase

Buy Now

Instant download

We Accept:

Report Copyright Violation

Also available in bundle (1)

Click Below to Access Bundle(s)

THIS BUNDLE CONTAINS: University of Louisville BIO 240 ALL Course Notes/Lecture Materials CHAPTER 1-11 and Study Guides.

Study Guide > University of Louisville BIO 240- Rabin Exam 2 Study Guide Course Notes > University of Louisville BIO 240 Notes Course Notes > University of LouisvilleBIO 240ch 13 Meiosis and Sex...

By QuizMaster 3 years ago

$0.5