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Biological membrane

Endomembrane System

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Biology
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organelles
Endomembrane system
Endoplasmic reticulum
Golgi apparatus
Vesicle
Endoplasm
cell
Lysosome
Ribosome
Biological membrane
mitochondrion
Cytoplasm

Endomembrane System This system controls the process of making proteins specified by the DNA in the nucleus and includes the organelles of the smooth ER, rough ER, and golgi apparatus. *Although ribosomes make proteins, it is not included in this system because it is not a membrane bound organelle and just composed of RNA and proteins.

Bio in focus chapter 5 (AP)

Subject: 
Biology
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Signal transduction
Cell Signaling
Membrane biology
Cell Biology
Peripheral membrane proteins
Cell membrane
Biological membrane
Hormone
G protein
Adenosine triphosphate
Cell surface receptor
Lipid raft

Chapter 5 Membrane Transport and Cell Signaling Fluid Mosaic Model Major Membrane Components Phospholipids Phosphate, glycerol, 2 fatty acids Fatty acid composition influences membrane fluidity Hydrophilic phosphate; hydrophobic fatty acids Cholesterol Influences membrane fluidity (flexibility) Glycoproteins Important in cell-to-cell recognition Proteins Integral ? passes through cell membrane Peripheral ? attached to one side of membrane Phospholipids Proportion of saturated and unsaturated fatty acid tails affect membrane fluidity Cholesterol Reduces membrane fluidity Prevents solidification of membrane at low temperatures Glycoproteins Carbohydrate chains (attached to proteins) vary between species, individuals, and even cell types Important in identifying ?self?

Assesment practise 6

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Biology
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Membrane biology
Cell membrane
Red blood cell
Lipid bilayer
Active transport
cell
Biological membrane
Membrane transport
Thylakoid
Semipermeable membrane
Photosynthesis
Glucose

Answer Sheet for Assessment Practice Name: Date: 12th Feb Unit Name: Cellular Energy A A D B B A C C C Figure 1 is the Granum or Thylakoids, and the light dependent phase reaction occurs here. Then figure 2 is an area where the Calvin cycle occurs and is called the Stroma.

Raven Biology Chapter 5 Notes

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Biology
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Membrane biology
Cell membrane
Carrier protein
Lipid bilayer
Facilitated diffusion
Biological membrane
Fluid mosaic model
Membrane fluidity
Active transport
Membrane protein
Exocytosis
Na+/K+-ATPase

Gavin Morgan 10/9/2015 Chapter 5 2-Point Notes The fluid mosaic model shows proteins embedded in a fluid lipid bilayer: 1. The lipid layer that forms the foundation of a cell?s membranes is a bilayer formed of phospholipids. 2. Globular proteins are inserted into the lipid bilayer, with their nonpolar segments in contact with the nonpolar interior of the bilayer and their polar portions protruding out from the membrane surface. Cellular membranes consist of four component groups: 1. A eukaryotic cell contains many membranes. 2. Cell membranes are assembled from: Phospholipid bilayers, transmembrane proteins, interior protein networks, and cell-surface markers.

Campbell9thEdChapter6Tour of the Cell

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Biology
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organelles
cell
Cytoskeleton
Eukaryote
Microtubule
Endomembrane system
Outline of cell biology
Endoplasmic reticulum
Actin
mitochondrion
plant cell
Biological membrane

A Tour of the Cell Chapter 6 Overview: The Fundamental Units of Life All organisms are made of cells The cell is the simplest collection of matter that can be alive Cell structure is correlated to cellular function All cells are related by their descent from earlier cells ? 2011 Pearson Education, Inc. Figure 6.1 Concept 6.1: Biologists use microscopes and the tools of biochemistry to study cells Though usually too small to be seen by the unaided eye, cells can be complex ? 2011 Pearson Education, Inc. Microscopy Scientists use microscopes to visualize cells too small to see with the naked eye In a light microscope (LM), visible light is passed through a specimen and then through glass lenses Lenses refract (bend) the light, so that the image is magnified

Campbell9eChapter7CellStructure

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Biology
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Membrane biology
Cell membrane
Active transport
Biological membrane
Passive transport
Lipid bilayer
Endocytosis
Semipermeable membrane
Na+/K+-ATPase
Facilitated diffusion
Carrier protein
Osmosis

Membrane Structure and Function Chapter 7 Overview: Life at the Edge The plasma membrane is the boundary that separates the living cell from its surroundings The plasma membrane exhibits selective permeability, allowing some substances to cross it more easily than others ? 2011 Pearson Education, Inc. Figure 7.1 Concept 7.1: Cellular membranes are fluid mosaics of lipids and proteins Phospholipids are the most abundant lipid in the plasma membrane Phospholipids are amphipathic molecules, containing hydrophobic and hydrophilic regions The fluid mosaic model states that a membrane is a fluid structure with a ?mosaic? of various proteins embedded in it ? 2011 Pearson Education, Inc. Membrane Models: Scientific Inquiry

AP Bio Chp 7

Subject: 
Biology
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Membrane biology
Cell membrane
Transport protein
Osmosis
Membrane potential
Semipermeable membrane
Biological membrane
Membrane protein
Carrier protein
Endocytosis
Turgor pressure
Passive transport

AP Reading Guide Chapter 7: Membrane Structure and Function Fred and Theresa Holtzclaw Name_______________________Period___________ Chapter 7: Membrane Structure and Function Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins 1. The large molecules of all living things fall into just four main classes. Name them. 2. Explain what is meant when we say a molecule is amphipathic. 3. In the 1960s, the Davson-Danielli model of membrane structure was widely accepted. Describe this model and then cite two lines of evidence that were inconsistent with it. 4. Who proposed the fluid mosaic model of membrane structure? When? Describe this model.

quiz 5

Subject: 
Biology
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organelles
cell
Endoplasmic reticulum
Golgi apparatus
Lysosome
Eukaryote
Biological membrane
Endomembrane system
Plasma cell

Which of the following is NOT found as a part of all eukaryotic cells? a. cell wall b. plasma membrane c. ribosomes d. golgi apparatus e. mitochondria Which of the following cell types would have the largest amount of SER? a. liver cells b. intestinal cells c. adipose cells d. sperm e. pancreatic cells You are studying a mutant type of cells in which proteins are synthesized but not sorted and targeted to the proper destination. You hypothesize that this cell has defective: a. Nucleus. b. Lysosomes. c. SER. d. RER. e. Golgi apparatus.

BIO CH 7 TEST

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Biology
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Membrane biology
Cell membrane
Biological membrane
Lipid bilayer
Facilitated diffusion
Carrier protein
Membrane potential
Semipermeable membrane
Tonicity
Lipid raft
Osmosis
Red blood cell

Campbell's Biology, 9e (Reece et al.) Chapter 7 Membrane Structure and Function Membranes and membrane transport are fundamental to cellular life. The concepts in this chapter require integration of concepts from previous chapters: the nature of water and hydrophobic versus hydrophilic molecules, the properties of lipid molecules and their role in regulating membrane fluidity, and the roles of proteins and carbohydrates in membrane function. The concepts of ion transport and electrochemical gradients across membranes are important foundations for the following chapters on energy metabolism. Finally, the bulk transport phenomena have important clinical significance in the immune system, during invasion by pathogens, and in cell signaling. Multiple-Choice Questions

Cell Membranes

Subject: 
Biology
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Biology
Membrane biology
Cell membrane
Lipid bilayer
Semipermeable membrane
Membrane protein
Facilitated diffusion
Carrier protein
Endocytosis
Membrane transport
Vesicle
Biological membrane
health

Cell Membranes Contents: Structure: the basics Fluid mosaic model/freeze fracture technique Membrane fluidity Membrane fluidity and cholesterol The Basics? The plasma membrane separates the living cell from its surroundings Phospholipids make up the majority of the bilayer Phospholipids consists of a hydrophilic phosphate head and two hydrophobic fatty acid tails Phospholipids are amphipathic molecules: containing both a hydrophilic and hydrophobic region The plasma membrane is described by the fluid mosaic model: The membrane is fluid with a variety of ?mosaic? proteins embedded in it The plasma membrane is selectively permeable: Small fat soluble (hydrophobic ? non polar) molecules, can enter the cell through the lipid bilayer (this occurs rapidly) e.g. hydrocarbons

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