1. Describe the function of the plasma membrane
... macromolecules into the cell by the inward budding of vesicles formed from coated pits; occurs in response to the binding of specific ligands to receptors on the cell’s surface • Ligand a molecule that binds to a specific receptor site of another • This is how cholesterol enters the cell - it enab ...
... macromolecules into the cell by the inward budding of vesicles formed from coated pits; occurs in response to the binding of specific ligands to receptors on the cell’s surface • Ligand a molecule that binds to a specific receptor site of another • This is how cholesterol enters the cell - it enab ...
Chapter 4: Cells and Their Environment
... phosphate “head” which is hydrophilic. It has two nonpolar lipid “tails” which are hydrophobic. ...
... phosphate “head” which is hydrophilic. It has two nonpolar lipid “tails” which are hydrophobic. ...
Cellular Transport Notes
... •actively moves molecules to where they are needed •Movement from an area of low concentration to an area of high concentration ...
... •actively moves molecules to where they are needed •Movement from an area of low concentration to an area of high concentration ...
Bio_Membranes_1_ - Kenwood Academy High School
... – allows some substances to cross more easily than others ...
... – allows some substances to cross more easily than others ...
Cell Transport ppt notes
... cells • Also called equilibrium • Maintained by plasma membrane controlling what enters & leaves the cell ...
... cells • Also called equilibrium • Maintained by plasma membrane controlling what enters & leaves the cell ...
File
... Exocytosis: movement of materials out of cell through the fusion of the plasma membrane and a transport vesicle Endosytosis: movement of large molecules into the cell by infolding of plasma membrane ...
... Exocytosis: movement of materials out of cell through the fusion of the plasma membrane and a transport vesicle Endosytosis: movement of large molecules into the cell by infolding of plasma membrane ...
Oxidative Stress
... are calcium-calmodulin dependent and constantly produce low level of NO ( primarly in endothelium=eNOS, neural=nNOS). ...
... are calcium-calmodulin dependent and constantly produce low level of NO ( primarly in endothelium=eNOS, neural=nNOS). ...
File: Chap03, Chapter 3: Structure and Function of the Cell
... only gases and water can pass through it. substances need permission to pass through it. only certain substances can pass through it. substances need carrier molecules to pass through it. ATP is always needed to move molecules across the plasma membrane. ...
... only gases and water can pass through it. substances need permission to pass through it. only certain substances can pass through it. substances need carrier molecules to pass through it. ATP is always needed to move molecules across the plasma membrane. ...
CHAPTER 4 The Organization of Cells
... • Two types of passive movement • unaided diffusion through the lipid bilayer, • facilitated diffusion through protein channels, or by means of a carrier protein ...
... • Two types of passive movement • unaided diffusion through the lipid bilayer, • facilitated diffusion through protein channels, or by means of a carrier protein ...
Insane in the Membrane
... them are found on the inside of the cell and some on the outside. Other proteins cross the bilayer with one end outside of the cell and one end inside. Those proteins that cross the layer are very important in the active transport of ions and small molecules. ...
... them are found on the inside of the cell and some on the outside. Other proteins cross the bilayer with one end outside of the cell and one end inside. Those proteins that cross the layer are very important in the active transport of ions and small molecules. ...
Antonie van Leeuwenhoek
... leaflet and phospholipid exclusively in the inner leaflet. It is assumed that in several non-enteric gram-negative bacteria some phospholipid is also present in the outer monolayer. Most outer membrane proteins span the lipid bilayer. Considerations on permeation of solutes through the outer membran ...
... leaflet and phospholipid exclusively in the inner leaflet. It is assumed that in several non-enteric gram-negative bacteria some phospholipid is also present in the outer monolayer. Most outer membrane proteins span the lipid bilayer. Considerations on permeation of solutes through the outer membran ...
Cell Membranes
... of movement is always with the concentration gradient, never against the gradient. B. The carrier molecule is nonspecific to the molecule that is transported. The direction of movement is always with the concentration gradient, never against the gradient. C. The carrier molecule is nonspecific to th ...
... of movement is always with the concentration gradient, never against the gradient. B. The carrier molecule is nonspecific to the molecule that is transported. The direction of movement is always with the concentration gradient, never against the gradient. C. The carrier molecule is nonspecific to th ...
Membrane Transport Animations
... 20. Compare a hypertonic solution to a hypotonic solution. Draw a picture or two showing what is going on. [hyper = more solute (dots) in external environment] [hypo = less solute in external environment] 21. Water travels across a cell membrane… (Circle one) a. from a hypotonic environment to a hy ...
... 20. Compare a hypertonic solution to a hypotonic solution. Draw a picture or two showing what is going on. [hyper = more solute (dots) in external environment] [hypo = less solute in external environment] 21. Water travels across a cell membrane… (Circle one) a. from a hypotonic environment to a hy ...
Bubble Lab - PSUSDscienceresources
... Bubble (Cell Membrane) Lab Background: The membrane that surrounds cells and organelles are made of a layer of phospholipids and proteins. It would take more than 10,000 stacked cell membranes to equal the thickness of a piece of paper. The phospholipid bi-layer is fluid but holds its shape due to i ...
... Bubble (Cell Membrane) Lab Background: The membrane that surrounds cells and organelles are made of a layer of phospholipids and proteins. It would take more than 10,000 stacked cell membranes to equal the thickness of a piece of paper. The phospholipid bi-layer is fluid but holds its shape due to i ...
8_SEMIPERMEABLEMemb
... plasma membrane, fuse with the plasma membrane and dump their soluble contents outside of the cell. This process is called exocytosis and it is mechanism by which cells can secrete molecules like proteins. For example, the epithelial cells in the breast use secretion vesicles to put the major protei ...
... plasma membrane, fuse with the plasma membrane and dump their soluble contents outside of the cell. This process is called exocytosis and it is mechanism by which cells can secrete molecules like proteins. For example, the epithelial cells in the breast use secretion vesicles to put the major protei ...
Chapter 8. Movement across the Membrane
... Move from HIGH to LOW concentration through a protein channel passive transport no energy needed facilitated = with help ...
... Move from HIGH to LOW concentration through a protein channel passive transport no energy needed facilitated = with help ...
Cell Membrane - cloudfront.net
... keeping the cytoplasm inside the cell. The cell membrane allows the cell to stay structurally intact in its water-based environment. The function of the plasma membrane is to control what goes in and out of the cell. Some molecules can go through the cell membrane to enter and leave the cell, but so ...
... keeping the cytoplasm inside the cell. The cell membrane allows the cell to stay structurally intact in its water-based environment. The function of the plasma membrane is to control what goes in and out of the cell. Some molecules can go through the cell membrane to enter and leave the cell, but so ...
chapter 7 diffusion
... Cell (compared to beaker) hypertonic or hypotonic Beaker (compared to cell) hypertonic or hypotonic Which way does the water flow? in or out 2005of cell AP Biology ...
... Cell (compared to beaker) hypertonic or hypotonic Beaker (compared to cell) hypertonic or hypotonic Which way does the water flow? in or out 2005of cell AP Biology ...
File
... within semipermeable membranes that regulate their interaction with their surroundings. ...
... within semipermeable membranes that regulate their interaction with their surroundings. ...
Animal cells
... & dissolve. cell membrane Non-polar tails hide from water. Carbohydrate cell markers ...
... & dissolve. cell membrane Non-polar tails hide from water. Carbohydrate cell markers ...
Cell Membranes
... membrane proteins Membrane protein types and functions: 1. Transport proteins - these proteins are involved in regulating transport of various substances in and out of the cell. 2. Receptor proteins – these proteins recognize “signals” or “messages” from their environment and can induce biological r ...
... membrane proteins Membrane protein types and functions: 1. Transport proteins - these proteins are involved in regulating transport of various substances in and out of the cell. 2. Receptor proteins – these proteins recognize “signals” or “messages” from their environment and can induce biological r ...
Chapter 5 Membrane Structure and Function
... movement – A ______ is a substance that can move or change shape in response to external forces – A ____________ is a substance that can be dissolved (dispersed as ions or molecules) in a solvent – A ___________ is a fluid capable of dissolving a solute ...
... movement – A ______ is a substance that can move or change shape in response to external forces – A ____________ is a substance that can be dissolved (dispersed as ions or molecules) in a solvent – A ___________ is a fluid capable of dissolving a solute ...
Plasma membrane, Diffusion, Osmosis, Facilitated Diffusion,
... Plasma membrane, Diffusion, Osmosis, Facilitated Diffusion, Active Transport Plasma membrane: The plasma membrane maintains _________________ by its _____________________________________. Plasma membrane structure: *_____________________________ model *more like a _____________ than a ______________ ...
... Plasma membrane, Diffusion, Osmosis, Facilitated Diffusion, Active Transport Plasma membrane: The plasma membrane maintains _________________ by its _____________________________________. Plasma membrane structure: *_____________________________ model *more like a _____________ than a ______________ ...
Lipid raft
The plasma membranes of cells contain combinations of glycosphingolipids and protein receptors organized in glycolipoprotein microdomains termed lipid rafts. These specialized membrane microdomains compartmentalize cellular processes by serving as organizing centers for the assembly of signaling molecules, influencing membrane fluidity and membrane protein trafficking, and regulating neurotransmission and receptor trafficking. Lipid rafts are more ordered and tightly packed than the surrounding bilayer, but float freely in the membrane bilayer. Although more common in plasma membrane, lipid rafts have also been reported in other parts of the cell, such as Golgi and lysosomes.