'Receptor protein' diaporamas de présentation

CELL COMMUNICATION

CELL COMMUNICATION. Campbell & reece Chapter 11. Cell Messaging. some universal mechanisms of cellular regulation cells most often communicate with other cells by chemical signals. Evolution of Cell Signaling. Yeast: Saccharomyces cerevisia 2 sexes: a & ?

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G-protein coupled receptor signaling pathways

G-protein coupled receptor signaling pathways. Signal transduction at the plasma membrane and secondary messengers G-protein coupled receptors and the cAMP signaling cascade GPCRs may also activate phosphoinositides signaling pathways and produce calcium transients

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Unit 4 Review

Unit 4 Review. Explain what happens in the signaling pathway between yeast mating cells. Explain what happens in the signaling pathway between yeast mating cells. Exchange of mating factors A cell secretes an a mating factor, which binds to receptors on the alpha cell

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Homeostasis : regulation of internal environment

Homeostasis : regulation of internal environment. Thermoregulation internal temperature Osmoregulation solute and water balance Excretion nitrogen containing waste. Regulation of body temperature. Thermoregulation 4 physical processes :

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Cell Communication

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8-1 Cell Membrane

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Function of Membranes

Function of Membranes. Compartmentalisation/ Dynamic boundary Isolation of cell from external world Alter cell form as necessary Division cell contents. Functions of Membranes. Selective permeability Control entry/exit in cells Control over organelle contents .Lysosome pH 5

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Biological Hierarchy:

Biological Hierarchy:. Involves (and you should review): Structure of plasma membranes Diffusion vs. active transport Hydrophobic vs. hydrophilic compounds Proteins Surface vs. intermembrane proteins Enzyme activity. Cell to Cell Communication.

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Chapter 45.

Chapter 45. Endocrine System Hormones. Regulation. Why are hormones needed? chemical messages from one body part to another communication needed to coordinate whole body homeostasis & regulation metabolism growth development maturation reproduction. growth hormones.

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The Endocrine System

The Endocrine System. Janie Gu Timothy Juwono Alick Shiu Richard Zhang. The endocrine system coordinates slower and longer response to stimulus. Regulates growth and homeostatic processes.

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Active Transport

Active Transport. Section 4-2. Some substances are transported against a concentration gradient. Facilitated diffusion moves sugars and amino acids across the cell membrane DOWN their concentration gradient.

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Heroin

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Cell Membrane

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Cell Signaling

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Receptor Proteins

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A.C.T.H.

A.C.T.H. Adrenocorticotropic Hormone. Brittany Rupp. ACTH is produced from the anterior lobe of the pituitary gland. The target cells for ACTH are found in the adrenal cortex. A corticotropin -releasing hormone (CRH) from the hypothalamus causes ACTH to be produced. What about it?.

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Signal transduction simulation

Signal transduction simulation. It all starts with the signal binding to the receptor on the target cell membrane. Signal molecule (Epinephrine). Receptor molecule. This binding causes the receptor protein to change conformation to send a signal inside the cell. Sample animations.

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Introduction (Arial 36, bold, RGB 38/84/124)

Modulation of Transcriptional Activity of Ecdysone dependent Genes by Different Hormone Response Elements (Arial 60, bold, white). S. Schauer, S. Braun, M. Spindler-Barth (Arial 48, bold, black) Institute of General Zoology and Endocrinology, Ulm University, Germany.

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