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Study sets matching "membrane"

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Study sets matching "membrane"

14 terms
Membrane
Fluid Mosaic Model
Membrane proteins
Selective permeability
Active transport
Property of a membrane that controls what goes in and out of…
Requires energy to move substances across membrane
Fluid Mosaic Model
Membrane proteins
14 terms
Membrane
Fluid Mosaic Model
Membrane proteins
Selective permeability
Active transport
Property of a membrane that controls what goes in and out of…
Requires energy to move substances across membrane
Fluid Mosaic Model
Membrane proteins
22 terms
Membrane
membrane
General Properties of a phospholipid b…
Phospholipids are permeable to:
Phospholipids are impermeable
composed mainly of phospholipid by layer... - also contains othe…
1. Self assembling in water. 2. Individual molecules are not…
•hydrophobic molecules ... •small molecules... . including water
•large molecules... •ions
membrane
composed mainly of phospholipid by layer... - also contains othe…
General Properties of a phospholipid b…
1. Self assembling in water. 2. Individual molecules are not…
26 terms
Membrane
plasma membrane
Plasma membrane
1ST COMPONENT OF MEMBRANES- PHOSPHOLIP…
lipid bilayer
only can be viewed under the electron microscope
3 parts
1) Polar head group ... 2) Linkage derived... from glycerol... (usuall…
plasma membrane
only can be viewed under the electron microscope
Plasma membrane
3 parts
Membrane
Water
Solvent
Solute
Solution
Makes up the majority of the cell. Solvent of life.
Liquid medium in a substance
Dissolved w a solvent to make a solution
Combination of solvent and dissolved solutes
Water
Makes up the majority of the cell. Solvent of life.
Solvent
Liquid medium in a substance
31 terms
Membrane
Membrane purpose
Selective permeability
Membrane components
Phospholipid
Selectively permeable boundary between the cell and its envir…
some substances pass easier than others
A phospholipid bilayer that is hydrophobic in the interior. M…
Molecule with phosphate group & glycerol that are hydrophilic…
Membrane purpose
Selectively permeable boundary between the cell and its envir…
Selective permeability
some substances pass easier than others
9 terms
Membrane
The cell membrane...
The type of lipid that makes up the ce…
The head of a phospholipid is
The tail of a phospholipid is
separates the internal environment of the cell from the exter…
PHOSPHOLIPID
hydrophilic
hydrophobic (made up of fatty acids)
The cell membrane...
separates the internal environment of the cell from the exter…
The type of lipid that makes up the ce…
PHOSPHOLIPID
Membrane
Fluid Mosaic Model
Membrane proteins
Selective permeability
Active transport
Shifting assortment of molecules that make up a plasma membrane
Property of a membrane that controls what goes in and out of…
Requires energy to move substances across membrane. Movement…
Fluid Mosaic Model
Shifting assortment of molecules that make up a plasma membrane
Membrane proteins
25 terms
Membrane
Endosymbiotic Theory
Brownian Motion
Diffusion
Diffusion
explains the origin of eukaryotic cells from prokaryotes
particles are always in motion
movement of particles or solutes from high areas of high conc…
particle collisions cause this to happen
Endosymbiotic Theory
explains the origin of eukaryotic cells from prokaryotes
Brownian Motion
particles are always in motion
Membrane
Fluid Mosaic Model
Membrane proteins
Selective permeability
Active transport
Property of a membrane that controls what goes in and out of…
Requires energy to move substances across membrane
Fluid Mosaic Model
Membrane proteins
24 terms
Membrane
types of transport(mod18)
Osmosis
Osmoregulation
Tonicity
diffusion: molecules spreading away from point of origin... Hig…
•A specialized type of diffusion involving water.... •Water typi…
•Living organisms must control internal concentration of wate…
measure of water potential of 2 solutions separated by semi p…
types of transport(mod18)
diffusion: molecules spreading away from point of origin... Hig…
Osmosis
•A specialized type of diffusion involving water.... •Water typi…
11 terms
Membrane
Isotonic
Hypertonic
Hypotonic
Exocytosis
solutions with the same solute concentration as that of the c…
solutions having greater solute concentration than that of th…
solutions having lesser solute concentration than that of the…
moves substance from the cell interior to extracellular space
Isotonic
solutions with the same solute concentration as that of the c…
Hypertonic
solutions having greater solute concentration than that of th…
22 terms
Membrane
Membrane Function
Fluid Mosaic Model
3 Types of Lipids
Cholestrol
-protect... -regulate transport in and out of cell... -cell recogni…
Mosaic... -lipid bi layer... -proteins are embedded... Fluid... -diffuses…
-phosolipds... -glycolipids... -cholestrol
- takes up 25%- 50% of animal cells ... -reduces membrane fluidi…
Membrane Function
-protect... -regulate transport in and out of cell... -cell recogni…
Fluid Mosaic Model
Mosaic... -lipid bi layer... -proteins are embedded... Fluid... -diffuses…
23 terms
Membrane
Membrane
Prokaryotic
Example of prokaryotic cell
Examples of eukaryotic cells
Fundamental to the organization of cell
Has no nucleus
Kingdom monera -bacteria
Protists, plants,fungi,animals
Membrane
Fundamental to the organization of cell
Prokaryotic
Has no nucleus
17 terms
Membrane
Why are caveolins special?
Simple diffusion
Facilitated diffusion
Primary active transport
Caveolins can do receptor-independent endocytosis. ... Caveolins…
nonpolar compounds only, down concentration gradient.
down electrochemical gradient
against electrochemical gradient driven by ATP
Why are caveolins special?
Caveolins can do receptor-independent endocytosis. ... Caveolins…
Simple diffusion
nonpolar compounds only, down concentration gradient.
10 terms
membrane
membrane
tent structure
Net structure
Pneumatic structure
thin, flexible service. Carries blood primarily through the d…
membrane structure pre-stressed by externally applied force i…
A membrane structure having any surface of closely spaced cab…
membrane Structure that this place in tension and stabilized…
membrane
thin, flexible service. Carries blood primarily through the d…
tent structure
membrane structure pre-stressed by externally applied force i…
15 terms
membrane
Draw a cell membrane
State Fick's Law
Define facilitated diffusion... - energy…
Define Secondary Active Transport... - g…
Glycoprotein... Glycolipid... Cholesterol... Protein... Phospholipid
Flux = (concentration difference x SA x diffusion coefficient…
Movement through an integral protein (carrier mediated), down…
Cotransporters - energy stored in the electrochemical gradien…
Draw a cell membrane
Glycoprotein... Glycolipid... Cholesterol... Protein... Phospholipid
State Fick's Law
Flux = (concentration difference x SA x diffusion coefficient…
47 terms
Membrane
what is a plasma membrane
what is the structure of the plasma me…
what does the phospholipid bilayer loo…
what is another term for the plasma me…
a structure that surrounds all cells and most organelles
made up of a phospholipid bilayer... mostly phospholipids, then…
fluid mosiac model
what is a plasma membrane
a structure that surrounds all cells and most organelles
what is the structure of the plasma me…
made up of a phospholipid bilayer... mostly phospholipids, then…
33 terms
The Membrane
plasma membrane
selectively permeable
phospholipid
amphipathic
separates intracellular from extracellular, composed of phosp…
the plasma membrane allows some substances in and out more ea…
1 phosphate group, 1 glycerol, 2 fatty acid tails (and someti…
both polar and non
plasma membrane
separates intracellular from extracellular, composed of phosp…
selectively permeable
the plasma membrane allows some substances in and out more ea…
8 terms
membrane
membrane main
Active transport
primary active trasnport
secondary active transport
...
requiring energy ... against concentration gradient (low-high)
...
symport low to high
membrane main
...
Active transport
requiring energy ... against concentration gradient (low-high)
34 terms
Membrane
Definition
Cell Membrane
Lipids
Phospholipids
Boundary that separates living cells from its surroundings.
Selective permeability, fluid mosaic, protects cell, communic…
Biological molecules. Non polar, hydrophobic and consist of h…
Most abundant and amphipathic. ... 2 fatty acids and phosphate g…
Definition
Boundary that separates living cells from its surroundings.
Cell Membrane
Selective permeability, fluid mosaic, protects cell, communic…
22 terms
Membrane
Polar head is
Nonpolar tails are
membrane behaves like a
proteins are free to
Hydrophilic
Hydrophobic
liquid
move around
Polar head is
Hydrophilic
Nonpolar tails are
Hydrophobic
19 terms
Membrane
Biological Membrane
Functions of cell membrane
Chemical Composition of Cell Membrane
Phospholipids in cell Membrane... Structure
...
1. Define the boundary of the cell. And Permeable Barrier.... 2.…
Lipids - Phospholipids, Glycolipids, Cholesterol.... Protein... Car…
Amphipathic - Heads are Hydrophilic. Tails are Hydrophobic... Wi…
Biological Membrane
...
Functions of cell membrane
1. Define the boundary of the cell. And Permeable Barrier.... 2.…
15 terms
Membrane
Dispel
Norm
Communal
Senile
驱散 驱逐
规范 基准
公用的
高龄的
Dispel
驱散 驱逐
Norm
规范 基准
14 terms
Membrane
plasma membrane, functions
fluid mosaic model
phospholipids, structure
selectively permeable
cell signaling, transport, growth, motility
Singer and Nicholson, 1972. lipid bilayer studded with protei…
- spine comprised of glycerol which has three binding sites f…
what crosses: small hydrophobic molecules, small uncharged po…
plasma membrane, functions
cell signaling, transport, growth, motility
fluid mosaic model
Singer and Nicholson, 1972. lipid bilayer studded with protei…
25 terms
Membrane
cell membrane size
selective permeability
phospholipids
amphipathetic
8nm thick
allows some substances to cross the membrane more easily than…
make up membrane... consists of hydrophilic head and hydrophobic…
have hydrophilic and hydrophobic side
cell membrane size
8nm thick
selective permeability
allows some substances to cross the membrane more easily than…
65 terms
Membrane
Cytosol
Interstitial Fluid
Variation of Cells
Fluid Mosaic Model
Fluid environment of the cell... Membrane separates cytosol and…
Fluid outside of the cell... Composition determines in/out flow…
200 different types of cells... multicellular organisms - 100 tr…
Glycoproteins... Glycolipid... Cholesterol... Phospholipid... Channel (Va…
Cytosol
Fluid environment of the cell... Membrane separates cytosol and…
Interstitial Fluid
Fluid outside of the cell... Composition determines in/out flow…
74 terms
membrane
plasma membrane
cell membrane
phospholipid bilayer
micelle
protects the cell, controls cytoplasmic contents, gatekeeper,…
phospholipids, proteins, carbohydrates, cholesterol and other…
amphiphilic, polar hydrophilic heads, nonpolar hydrophobic ta…
tails come together to form a droplet- hydrophobic regions aw…
plasma membrane
protects the cell, controls cytoplasmic contents, gatekeeper,…
cell membrane
phospholipids, proteins, carbohydrates, cholesterol and other…
5 terms
Membrane
phospholipid bilayer
phospholipid
cholesterol
glycoprotein + glycolipid
a)selectively permeable... b)entry and exit of molecules into an…
a)hydrophobic tail... b)hydrophilic head
a)maintains fluidity ... b)support ... c)reduces membrane permeabil…
a) cell signalling... b) receptors for chemicals... c) antigens act…
phospholipid bilayer
a)selectively permeable... b)entry and exit of molecules into an…
phospholipid
a)hydrophobic tail... b)hydrophilic head
24 terms
Membrane
Types of Lipids in the Membrane
Intergral Proteins
Peripheral Proteins
Lipid Anchor Proteins
phosphoglycerol, sphingolipids, steroids
fully or partially inserted in membrane... -alpha helix, can be…
bind to intergral proteins... bing to membrane surface without e…
sits on outside of cell... -ie- GPI... fatty acid binding to protei…
Types of Lipids in the Membrane
phosphoglycerol, sphingolipids, steroids
Intergral Proteins
fully or partially inserted in membrane... -alpha helix, can be…
31 terms
Membrane
Glycocalyx
molecule can diffuse if:
Endrocrine signaling
Chemical signaling
suger coating, carborhydrate and cell to cell recognition
lipid soluble, pass through a protein channel, assisted by ca…
hormone released into blood, target cells have receptors for…
ligand gated, G-protein coupled receptors, intracellular rece…
Glycocalyx
suger coating, carborhydrate and cell to cell recognition
molecule can diffuse if:
lipid soluble, pass through a protein channel, assisted by ca…
11 terms
Membrane
Diffusion
Osmosis
Isotonic
Hypertonic
No energy required ... High to low until Equilibrium reached... Onc…
No energy ... High to low
Water moves back and fourth across membrane, no net movement…
Greater concentration outside cell... Water moves out and cell w…
Diffusion
No energy required ... High to low until Equilibrium reached... Onc…
Osmosis
No energy ... High to low
41 terms
Membrane
What is fluid mosaic model
Function of fluid mosaic
Role phospholipid in general
Role of phospholipid in membrane fluid…
Fluid: Proteins constantly moving laterally, Phospholipids co…
(Explain fluid mosaic) this creates transient gaps, allow sma…
Charged hydrophilic hydrocarbon tails face outwards, non-pola…
Temp decrease, fluidity decrease, phospholipids rigid, closel…
What is fluid mosaic model
Fluid: Proteins constantly moving laterally, Phospholipids co…
Function of fluid mosaic
(Explain fluid mosaic) this creates transient gaps, allow sma…
10 terms
Membrane
Epithelial membranes
Mucous membrane
Serous membrane
Synovial membrane
The combination of an epithelial layer and in underlying conn…
Line body cavities that open to the outside
Line cavities that do not open directly to yhe outside
Line joints
Epithelial membranes
The combination of an epithelial layer and in underlying conn…
Mucous membrane
Line body cavities that open to the outside
19 terms
MEMBRANE
4 types of membranes
Cutaneous membranes
Mucous membranes
digestive tract
1. Cutaneous membranes... 2. Mucous membranes... 3. Serous membrane…
Skin; covers the entire body and is made up of squamous epith…
Typically consist of columnar epithelial cells; Produce a muc…
opens via the mouth and anus
4 types of membranes
1. Cutaneous membranes... 2. Mucous membranes... 3. Serous membrane…
Cutaneous membranes
Skin; covers the entire body and is made up of squamous epith…
36 terms
membrane
draw single phospholipid... include gl…
define hydrophilic
define hydrophobic
what were some issues with the Davson-…
...
substances attracted to water
substances not attracted to water
1) freeze-etched electron micrographs (found that once broken…
draw single phospholipid... include gl…
...
define hydrophilic
substances attracted to water
10 terms
Membrane
the carbohydrate chain on the outer su…
exocytosis
the primary sequence of the amino acids
An increased amount of saturated fats…
Red blood cells come in many "blood types" type A, type B, ty…
Cell products are secreted from the cell through
Embedded proteins serve a variety of purposes. The structure…
Animals have adapted to the cold climates. Which statement ex…
the carbohydrate chain on the outer su…
Red blood cells come in many "blood types" type A, type B, ty…
exocytosis
Cell products are secreted from the cell through
Membrane
What does the Membrane need to do?
Homeostasis
Parts of Membrane
Integral
Let in nutrients, signaling, transport, provide protection fr…
A tendency to maintain a balanced or constant internal state
1.) Phospholipid Bilayer,... Head = Polar = hydrophilic and is m…
goes completely threw the membrane
What does the Membrane need to do?
Let in nutrients, signaling, transport, provide protection fr…
Homeostasis
A tendency to maintain a balanced or constant internal state
membrane
Selectively permeable
Diffusion
Osmosis
Active transport
only select ive things get trugh
automatic movement of molecules
diffusion of water
when molecules are pumped from a low to high conctration
Selectively permeable
only select ive things get trugh
Diffusion
automatic movement of molecules
10 terms
Membrane
Mucous
Mucous membrane
Serous membrane
2 types of serous membrane
Provides mucous and other substance.
Lines the body cavities that have an opening outside the body…
Provide protection
Parietal and visceral
Mucous
Provides mucous and other substance.
Mucous membrane
Lines the body cavities that have an opening outside the body…
29 terms
Membrane
Significance of membranes
Thermodynamics
Gel and fluid states of bilayer lipids
Tm of the bilayer increases with
Define external boundary of cells and regulate flow of molecu…
Nonpolar substance in water - causes unfavorable organization…
...
fatty chain LENGTH and the DEGREE OF SATURATION of the compon…
Significance of membranes
Define external boundary of cells and regulate flow of molecu…
Thermodynamics
Nonpolar substance in water - causes unfavorable organization…
25 terms
Membrane
chlorestrol
diffusion
phosphate heads
fatty acid tails
makes cell fluid
no energy required, high concentration to low concentration,…
hydrophilic (water attracting)
hydrophobic (water repelling)
chlorestrol
makes cell fluid
diffusion
no energy required, high concentration to low concentration,…
43 terms
Membrane
membranous tissues
boundary layer
cell membrane functions
barrier exchange
surround structure pericardial membrane; epithelial tissues t…
cell membrane (plasmalemma) enclose cells
1. barrier isolates cell (impermeable) chemically, physically…
creates body fluid compartments with different components
membranous tissues
surround structure pericardial membrane; epithelial tissues t…
boundary layer
cell membrane (plasmalemma) enclose cells
13 terms
Membrane
Phospholipids
Cellular Membranes
Transmembrane proteins Carriers
Transmembrane proteins Channels
Glycerol(3 C polyalcohol), with 2 fatty acids attached to the…
made of a phospholipid bilayer, transmembrane proteins(integr…
actively or passively transport molecules across a membrane.…
passively transport molecules across membrane. create tunnels…
Phospholipids
Glycerol(3 C polyalcohol), with 2 fatty acids attached to the…
Cellular Membranes
made of a phospholipid bilayer, transmembrane proteins(integr…
21 terms
Membrane
Active transport
Bilayer
Cholesterol
Diffusion
Energy consuming transport of molecules or ions across a memb…
Double layer formed by phospholipids due to the hydrophobic p…
Compound of the sterol type found in most body tissues and al…
Net movement of molecules from a region of high concentration…
Active transport
Energy consuming transport of molecules or ions across a memb…
Bilayer
Double layer formed by phospholipids due to the hydrophobic p…
6 terms
MEMBRANE
Hypertonic
Isotonic
Membrane Protein
Intact
having a higher solute concentration compared to the solution…
the net flow of water molecules between two solutions is zero
proteins that are located at the membrane. There proteins are…
not damaged or impaired in any way; complete.He cell us intac…
Hypertonic
having a higher solute concentration compared to the solution…
Isotonic
the net flow of water molecules between two solutions is zero
21 terms
membrane
Adversity
sanction
sovereign
fortification
a bad situation that causes trouble
authorization of something or approval of somthing
nation rules its self
structure or business that is used as defense
Adversity
a bad situation that causes trouble
sanction
authorization of something or approval of somthing
12 terms
Membrane
Endocytosis
Osmosis
Diffusion (Gas)
Isotonic
Active movement of large particles INTO a cell
Passive movement of water through a cell membranes
Movement of particles from an area of high concentration to l…
Solution with EQUAL concentrations of dissolved solids on bot…
Endocytosis
Active movement of large particles INTO a cell
Osmosis
Passive movement of water through a cell membranes
24 terms
Membrane
Cell Membrane
Diffusion
Diffusion always moves from a region of
Dynamic equilibrium
Allows only certain things threw
The random movement of molecules from a greater to a larger c…
Greater to lower
When the concentrations on both sides are equal
Cell Membrane
Allows only certain things threw
Diffusion
The random movement of molecules from a greater to a larger c…
10 terms
Membrane
Aquaporins
Selectively pemeable
Transport protiens
Hypertonic
Protein channels for water
Certain materials pass though the membrane and not others
Allows for tramsport though the phospholipid membrame
Greater solute concentration
Aquaporins
Protein channels for water
Selectively pemeable
Certain materials pass though the membrane and not others
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