How can we help?

You can also find more resources in our Help Center.

Study sets matching "biology function membrane structure"

Study sets
Classes
Users

Study sets matching "biology function membrane structure"

37 terms
Biology Membrane Structure and Function
selective permeability
amphipathic
fluid mosaic model
integral protein
a property of biological membranes that allows them to regula…
having both a hydrophilic region and a hydrophobic region
the currently accepted model of cell membrane structure, whic…
a transmembrane protein with hydrophobic regions that extend…
selective permeability
a property of biological membranes that allows them to regula…
amphipathic
having both a hydrophilic region and a hydrophobic region
36 terms
Biology: Structure and function of plasma membrane
Plasma Membrane Component:
Plasma Membrane Structure is made of
1)Integral proteins:
2)Peripheral proteins:
1)Phospholipid: 40%... 2)Cholesterol:... 3)Proteins: 50%... 4)Carbohyd…
1)Lipid bilayer... Hydrophobic tail... Hydrophilic head... 2)Mosaic fl…
Single pass or multiple pass... Full pass or partial pass... Alpha…
no membrane pass
Plasma Membrane Component:
1)Phospholipid: 40%... 2)Cholesterol:... 3)Proteins: 50%... 4)Carbohyd…
Plasma Membrane Structure is made of
1)Lipid bilayer... Hydrophobic tail... Hydrophilic head... 2)Mosaic fl…
16 terms
Biology: membrane structure and function
Cell recognition protein
Receptor proteins
Channel protein
Enzymatic proteins
Carbohydrates sugar coat the cell. Similar to a human fingerp…
Bind to chemical messengers with specific shape. Immune syste…
Passage for insoluble molecules and ions to pass freely throu…
Catalysts that speed up or slow down chemical reactions. Carr…
Cell recognition protein
Carbohydrates sugar coat the cell. Similar to a human fingerp…
Receptor proteins
Bind to chemical messengers with specific shape. Immune syste…
37 terms
Biology Membrane Structure and Function
selective permeability
amphipathic
fluid mosaic model
integral protein
a property of biological membranes that allows them to regula…
having both a hydrophilic region and a hydrophobic region
the currently accepted model of cell membrane structure, whic…
a transmembrane protein with hydrophobic regions that extend…
selective permeability
a property of biological membranes that allows them to regula…
amphipathic
having both a hydrophilic region and a hydrophobic region
24 terms
biology: membrane structure and function
Fluid Mosaic Model
selective permeability
passive transport
concentration gradient
description of the membrane structure- mosaic of a diverse mo…
•allows some but not all materials to cross... • enables cell th…
•no energy required ... • the diffusion of a substance across an…
•particles moving from higher to lower concentration ... •higher…
Fluid Mosaic Model
description of the membrane structure- mosaic of a diverse mo…
selective permeability
•allows some but not all materials to cross... • enables cell th…
106 terms
Biology - Membrane Structure and Function
isolates cell environment, regulates e…
chemical environment
lipids
phospholipids
functions of the plasma membrane
the plasma membrane regulates the _______ ______ in a cell
what are membranes made of?
molecules which can form membranes naturally
isolates cell environment, regulates e…
functions of the plasma membrane
chemical environment
the plasma membrane regulates the _______ ______ in a cell
68 terms
Membrane Structure and Function: Biology
selective permeability
lipids, proteins, carbohydrates
amphipathic
fluid mosaic model
the plasma membrane exhibits this; it allows some substances…
main parts of membranes
it has both a hydrophilic region and a hydrophobic region; ex…
membrane is a mosaic of protein molecules bobbing in a fluid…
selective permeability
the plasma membrane exhibits this; it allows some substances…
lipids, proteins, carbohydrates
main parts of membranes
77 terms
Biology: Membrane Structure and Function
some things can easily pass through it
oxygen, carbon dioxide, and other SMAL…
glucose and the large polar, water-sol…
channel proteins
the plasma membrane is a selectively permeable membrane, what…
What can cross the membrane
What can't cross the membrane easily?
how does water pass through the membrane?
some things can easily pass through it
the plasma membrane is a selectively permeable membrane, what…
oxygen, carbon dioxide, and other SMAL…
What can cross the membrane
42 terms
Biology: Membrane Structure and Function
Amphipathic Molecule
Fluid Mosaic Molecule
Selective Permeability
Integral Protein
Has both a hydrophilic region and a hydrophobic region.
Fluid membrane with a mosaic of proteins embedded in the bila…
Some substances may cross through a membrane easier than othe…
Penetrates the hydrophobic core of the lipid bilayer.
Amphipathic Molecule
Has both a hydrophilic region and a hydrophobic region.
Fluid Mosaic Molecule
Fluid membrane with a mosaic of proteins embedded in the bila…
67 terms
Biology Membrane Structure and Function
selective permeability
amphipathic
fluid mosaic model
integral protein
a property of biological membranes that allows them to regula…
having both a hydrophilic region and a hydrophobic region
the currently accepted model of cell membrane structure, whic…
a transmembrane protein with hydrophobic regions that extend…
selective permeability
a property of biological membranes that allows them to regula…
amphipathic
having both a hydrophilic region and a hydrophobic region
Biology Membrane Structure, Function
The fluid mosaic structure of cell mem…
Four functions of membrane proteins.
How membranes exhibit selective permea…
The structure of phospholipid molecule…
The fluid mosaic structure are the phospholipids and choleste…
1) Cell signaling.... 2) Selective transport.... 3) Excretion of wa…
Membranes exhibit this because non-polar items can easily pas…
The phospholipids make a membrane because the tails hydrophob…
The fluid mosaic structure of cell mem…
The fluid mosaic structure are the phospholipids and choleste…
Four functions of membrane proteins.
1) Cell signaling.... 2) Selective transport.... 3) Excretion of wa…
26 terms
Biology: Membrane Structure and Function
What two major types of biological mol…
How many different protein molecules a…
When a carbohydrate chain is attached…
When a carbohydrate is attached to a p…
lipids and protein
Three. Small surface protein, membrane-spanning protein, and…
Glycoprotein
Glycolipid
What two major types of biological mol…
lipids and protein
How many different protein molecules a…
Three. Small surface protein, membrane-spanning protein, and…
23 terms
Biology - Membrane Structure and Function
differentially permeable
concentration gradient
Cholesterol
What are the most common lipids found…
certain substances can move across the membrane while others…
a measurement of how the concentration of something changes f…
lipid found in the animal plasma membrane. Helps modify the f…
A) cholesterol... B) Glycolipids ... C) phospholipids
differentially permeable
certain substances can move across the membrane while others…
concentration gradient
a measurement of how the concentration of something changes f…
17 terms
Membrane Structure and Function -- Biology
Learning Targets
Phospholipid
Protein
Cholesterol
- Membrane structure indicated its function to control what g…
- Barrier... - Polar head and functions... - Forms an impermeable b…
- Transport... - Many shapes and functions... - Selectively permeable
- Fluidity: Controls in membrane... - Keeps tails from getting t…
Learning Targets
- Membrane structure indicated its function to control what g…
Phospholipid
- Barrier... - Polar head and functions... - Forms an impermeable b…
Biology Membrane Structure and Functions
What function of normal membranes is i…
describe the fluid mosaic model
they consist of lipid molecules in whi…
what are mosaic of proteins involved in?
People with CF the water is retained within the cell and mucu…
the lipid and protein molecules membranes consist of are free…
composition of membranes
transport, attachment, and enzymes
What function of normal membranes is i…
People with CF the water is retained within the cell and mucu…
describe the fluid mosaic model
the lipid and protein molecules membranes consist of are free…
25 terms
Biology: Membrane Structure and Function
selective permeability
diffusion
concentration gradient
passive transport
a property of biological membranes that allows them to regula…
Movement of molecules from an area of higher concentration to…
Gradual decrease in concentration over a distance. High conce…
the diffusion of a substance across a membrane without energy
selective permeability
a property of biological membranes that allows them to regula…
diffusion
Movement of molecules from an area of higher concentration to…
14 terms
Biology: membrane structure and function
What is the outer boundary of the cell?
Functions of the plasma membrane
Components of membranes
Orientation of phospholipids
Outer boundary is the cell membrane/cell wall.
1) it separates the contents of the cell from its outside env…
Major ingredients and minor ingredients. Membranes consist of…
Arranged in a bilayer with the hydrophilic heads towards to o…
What is the outer boundary of the cell?
Outer boundary is the cell membrane/cell wall.
Functions of the plasma membrane
1) it separates the contents of the cell from its outside env…
25 terms
Biology: Membrane Structure and Function
selective permeability
diffusion
concentration gradient
passive transport
a property of biological membranes that allows them to regula…
Movement of molecules from an area of higher concentration to…
Gradual decrease in concentration over a distance. High conce…
the diffusion of a substance across a membrane without energy
selective permeability
a property of biological membranes that allows them to regula…
diffusion
Movement of molecules from an area of higher concentration to…
49 terms
Membrane structure and Function Campbell Biology
Plasma Membrane
Phospholipids
Amphipathic molecules
Fluid mosaic model
1. Is the boundary that separates the living cell from its su…
1. are the most abundant lipid in the Plasma membrane... 2. Are…
containing hydrophobic and hydrophilic regions
states that a membrane is a fluid structure with a "mosaic" o…
Plasma Membrane
1. Is the boundary that separates the living cell from its su…
Phospholipids
1. are the most abundant lipid in the Plasma membrane... 2. Are…
35 terms
Biology: Chapter 5 Membrane Structure and Function
Three components of the Plasma Membrane
Function of the plasma membrane
integral proteins
peripheral proteins
phospholipids, cholesterol, proteins
membranes create separation between the cell and the external…
proteins fully embedded into the plasma membrane... -may protrud…
proteins that only occur on the cytoplasmic side of the membr…
Three components of the Plasma Membrane
phospholipids, cholesterol, proteins
Function of the plasma membrane
membranes create separation between the cell and the external…
11 terms
Biology- cell membrane structure and function
Phospholipid bilayers
Substances that pass through easily
Substances that cannot pass through
Concentration gradient
-polar hydrophilic head loves water... -nonpolar hydrophobic tai…
-Small, uncharged molecules... -Gases
-large molecules... -charged molecules (ions)
A difference in concentration from one area of o another
Phospholipid bilayers
-polar hydrophilic head loves water... -nonpolar hydrophobic tai…
Substances that pass through easily
-Small, uncharged molecules... -Gases
24 terms
AP Biology Membrane Structure and Function
selective permeability
fluid mosaic model
integral protein
integrin
property of biological membranes that allows them to make som…
the plasma membrane is a fluid structure with a "mosaic" of v…
A transmembrane protein with hydrophobic regions that extend…
In animal cells, a transmembrane receptor protein that interc…
selective permeability
property of biological membranes that allows them to make som…
fluid mosaic model
the plasma membrane is a fluid structure with a "mosaic" of v…
46 terms
Cell Biology: Membrane structure and function
phospholipid, protein molecules
organelles
diffusion
osmosis
Membranes consist largely of ______ and ______ _____.
are membrane- bound compartments inside eukaryotic cells
is the movement of ions from a region of higher concentration…
is the movement of water across a selectively permeable membr…
phospholipid, protein molecules
Membranes consist largely of ______ and ______ _____.
organelles
are membrane- bound compartments inside eukaryotic cells
21 terms
BV Biology U3: Cell Theory and Membrane Structure and Function
cell
cell theory
cell membrane
eukaryote
basic unit of life
1. all living things are made of cells.... 2. cells are smallest…
1. boundary between cell and environment. 2. regulates what e…
cell has a nucleus ("EU" = true nucleus)
cell
basic unit of life
cell theory
1. all living things are made of cells.... 2. cells are smallest…
37 terms
AP Biology - Membrane Structure and Function
selective permeability
amphipathic
fluid mosaic model
integral protein
a property of biological membranes that allows them to regula…
having both a hydrophilic region and a hydrophobic region
the currently accepted model of cell membrane structure, whic…
a transmembrane protein with hydrophobic regions that extend…
selective permeability
a property of biological membranes that allows them to regula…
amphipathic
having both a hydrophilic region and a hydrophobic region
63 terms
AP Biology - Membrane Structure and Function
What is the basic structure of a membr…
Why is a membrane good for a cell?
What are the components of a plasma me…
What is cholesterol and what does it do?
Phospholipid bilayer
Compartmentalizes - allows for many processes to occur at onc…
-Proteins, lipids, fibers
-Lipid found in the animal plasma membrane... -Modifies how flui…
What is the basic structure of a membr…
Phospholipid bilayer
Why is a membrane good for a cell?
Compartmentalizes - allows for many processes to occur at onc…
35 terms
Cell Biology: Membrane Structure and Function
Key Concepts... Membranes consist...
Key Concepts... Organelles are...
Key Concepts... Diffusion is the...
Key Concepts... Osmosis..
Membranes consist largely of phospholipid and protein molecules
Organelles are membrane-bound compartments inside eukaryotic…
Diffusion is the movement of ions from a region of higher con…
Osmosis is the movement of water across a selectively permeab…
Key Concepts... Membranes consist...
Membranes consist largely of phospholipid and protein molecules
Key Concepts... Organelles are...
Organelles are membrane-bound compartments inside eukaryotic…
38 terms
AP Biology, Ch. 7-Membrane Structure & Function
active transport
amphipathic molecule
aquaporin
bulk transport
The movement of a substance across a biological membrane agai…
A molecule that has both a hydrophilic region and a hydrophob…
A transport protein in the plasma membrane of a plant or anim…
Mechanism of large molecule (proteins, polysaccharides, parti…
active transport
The movement of a substance across a biological membrane agai…
amphipathic molecule
A molecule that has both a hydrophilic region and a hydrophob…
87 terms
Biology Chpt 5: Membrane Structure & Function
The plasma membrane is ________________
Amphipathic
The phosphate head of the phospholipid…
Phospholipids
amphipathic
they are hydrophilic (water loving) & hydrophobic
polar, non polar
makeup the bulk of the membrane, molecules & proteins are emb…
The plasma membrane is ________________
amphipathic
Amphipathic
they are hydrophilic (water loving) & hydrophobic
32 terms
Biology Chapter 11 Plasma Membrane Structure and Function
Plasma Membrane
Extracellular Matrix
ECM Structure
Collagen
-made of phospholipid bilayer with many interspersed proteins…
-ECM (fiber composite)... -structural support... -amount and comp…
-a ground substance formed of gelatinous polysaccharide... -a n…
-more elastic than cellulose ... -forms a flexible extracellula…
Plasma Membrane
-made of phospholipid bilayer with many interspersed proteins…
Extracellular Matrix
-ECM (fiber composite)... -structural support... -amount and comp…
19 terms
Cell biology: Membrane structure and function
What do membranes consist largely of?
What are organelles?
What is diffusion?
nuclear envelope
phospholipid bilayer and protein molecules (receptor, recogni…
membrane-bound compartments inside eukaryotic cells
the movement of ions from a region of higher concentration to…
double-membrane system; pores allow exchange
What do membranes consist largely of?
phospholipid bilayer and protein molecules (receptor, recogni…
What are organelles?
membrane-bound compartments inside eukaryotic cells
29 terms
Biology 122: Membrane Structure & Function
Amphipathic Molecule
Phospholipid Bilayer
Hydrophilic Regions
Hydrophobic Regions
Has hydrophobic and hydrophilic region.
Starting point to membranes. Hydrophilic and hydrophobic regi…
Part of the phospholipid bilayer that faces the outside and t…
Part of the phospholipid bilayer that faces the inside of the…
Amphipathic Molecule
Has hydrophobic and hydrophilic region.
Phospholipid Bilayer
Starting point to membranes. Hydrophilic and hydrophobic regi…
40 terms
Biology Chapter 7- Membrane Structure and Function
Membrane
Membrane structure
Membrane
Lipids- phospholipid
thin boundary that surrounds all cells
the fluid mosaic model, allows for the membrane to regulate t…
Function: serves as the boundary between the living cell and…
-makes 42% of the membrane structure ... -Arrangement: BILAYER:…
Membrane
thin boundary that surrounds all cells
Membrane structure
the fluid mosaic model, allows for the membrane to regulate t…
49 terms
Membrane structure and Function
Plasma Membrane
Phospholipids
amphipathic molecules
Fluid mosaic model
1. is the boundary that separates the living cell from its su…
1. are the most abundant lipid in the Plasma membrane... 2. Are…
containing hydrophobic and hydrophilic regions
states that a membrane is a fluid structure with a "mosaic" o…
Plasma Membrane
1. is the boundary that separates the living cell from its su…
Phospholipids
1. are the most abundant lipid in the Plasma membrane... 2. Are…
9 terms
Biology 1107- Membrane Structure and Function
Potassium
Sodium
Active Transport
Passive Transport
in cell
Outside cell
against concentration gradient
with concentration gradient
Potassium
in cell
Sodium
Outside cell
30 terms
Biology Cell Membrane structure and function
Homeostasis
Phospholipid
head
tails
maintenance of stable internal conditions in a changing envir…
is made up of a head and a tail
phosphate
fatty acids
Homeostasis
maintenance of stable internal conditions in a changing envir…
Phospholipid
is made up of a head and a tail
38 terms
AP Biology Membrane Structure and Function
phospholipid bilayer
amphipathic
fluid mosaic model
J. F. Danielli+H. Davson
Molecules that are constituents of the inner bilayer of biolo…
A molecule that has both a hydrophilic region and a hydrophob…
The currently accepted model of cell membrane structure, whic…
one of the scientists who proposed the sandwich model of the…
phospholipid bilayer
Molecules that are constituents of the inner bilayer of biolo…
amphipathic
A molecule that has both a hydrophilic region and a hydrophob…
40 terms
Biology 101 - Membrane Structure and Function
amphipathic molecules
phospholipid
fluid mosaic model
freeze-fracture
have dual functions
most abundant molecule in plasma membrane, has hydrophilic he…
states that membrane is fluid structure with a "mosaic" of va…
specialized preparation technique that splits a membrane alon…
amphipathic molecules
have dual functions
phospholipid
most abundant molecule in plasma membrane, has hydrophilic he…
46 terms
Cell Biology: Membrane structure and Function
membranes
Eukaryotic cells
Diffusion
Osmosis
Consist largely of phospholipic and protein molecules
Organelles are membrane bound compartments inside ____ ____?
The movement of ions from a region of higher concentration to…
the movement of water across a selectively permeable membrane…
membranes
Consist largely of phospholipic and protein molecules
Eukaryotic cells
Organelles are membrane bound compartments inside ____ ____?
63 terms
(AP Biology)Ch. 7 membrane structure and function
The _____________ is the boundary that…
The plasma membrane exhibits _________…
Cellular membranes are fluid mosaics o…
_______________ are the most abundant…
plasma membrane
selective permeability
lipids, proteins
Phospholipids
The _____________ is the boundary that…
plasma membrane
The plasma membrane exhibits _________…
selective permeability
10 terms
Cell Membrane Structure and Function
Cell Membrane
Phospholipids
Selectively Permeable
Hydrophilic
Decides what can enter or leave the cell.
Lipids (fats) that make up the cell membrane. They have a pol…
Allows certain things to pass through and prevents other thin…
Will mix with water; polar phospholipid heads
Cell Membrane
Decides what can enter or leave the cell.
Phospholipids
Lipids (fats) that make up the cell membrane. They have a pol…
45 terms
Cell Membrane Structure and Function - Biology
Homeostasis
What is the cells enviornment?
Selectively Permeable
What determines what goes in/out of th…
the process of maintaining a constant internal enviornment de…
fluid, water, take in nutrients and excrete waste products, e…
allows certain molecules to pass through while others are pre…
size & charge
Homeostasis
the process of maintaining a constant internal enviornment de…
What is the cells enviornment?
fluid, water, take in nutrients and excrete waste products, e…
20 terms
Cell Membrane structure and function
Phospholipid
Phospholipid bilayer
Membrane proteins
Selectively Permeable
molecule that has a hydrophillic "head", and two hydrophobic,…
a double layer of phospholipids that makes up a plasma membrane
various kinds of these are embedded in the cell membrane and…
Cell membranes let small, non-polar molecules diffuse through…
Phospholipid
molecule that has a hydrophillic "head", and two hydrophobic,…
Phospholipid bilayer
a double layer of phospholipids that makes up a plasma membrane
17 terms
Cell Biology Membranes Structure and Function
Plasma Membrane Composition
Classes of Membrane Lipids
Eicosanoids
Cholesterol
Makes up on average about 10% of a cell's mass. P-face = prot…
In order of most abundance to least abundance:... 1. Phospholip…
Makeup small but important part of plasma. Used for synthesis…
"Wild card" in plasma membrane, inserts into membranes to clo…
Plasma Membrane Composition
Makes up on average about 10% of a cell's mass. P-face = prot…
Classes of Membrane Lipids
In order of most abundance to least abundance:... 1. Phospholip…
32 terms
Biology 186 Membrane structure and function
What is the membrane composed of?
What are the functions of the membrane?`
What is the fluid mosaic model?
What is the purpose of a selectively p…
Lipids (phosphglycerides, sphingolipids and sterols), Protein…
compartmentalize, energy transduction, transport (buy protein…
The current model of the cell membrane we use. A phospholipid…
It allows some substances to pass through more easily than ot…
What is the membrane composed of?
Lipids (phosphglycerides, sphingolipids and sterols), Protein…
What are the functions of the membrane?`
compartmentalize, energy transduction, transport (buy protein…
30 terms
Biology 12 cell membrane structure and function
Phospholipid bilayer
Fluid mosaic
Peripheral proteins
Integral proteins
Phospholipids with hydrophilic heads facing out and hydrophob…
Phospholipid bilayer stuffed with proteins and cholesterol
Proteins found on inside of the cell and held in place by cyt…
Embedded proteins that can protrude from one or both sides, c…
Phospholipid bilayer
Phospholipids with hydrophilic heads facing out and hydrophob…
Fluid mosaic
Phospholipid bilayer stuffed with proteins and cholesterol
22 terms
AP Biology Chapter 7 (Membrane structure and function)
Ch. 7: Explain the meaning of the stat…
Explain how the fluid mosaic model of…
Describe the fluidity of the component…
Explain how cholesterol resists change…
An amphipathic molecule has a hydrophilic and hydrophobic reg…
a. Actual membrane aren't solely made of phospholipids. They…
The cell membrane moves in a lateral motion. The membrane mai…
At moderate temperatures, cholesterol hinders fluidity but at…
Ch. 7: Explain the meaning of the stat…
An amphipathic molecule has a hydrophilic and hydrophobic reg…
Explain how the fluid mosaic model of…
a. Actual membrane aren't solely made of phospholipids. They…
33 terms
Biology 1610- Cell Membrane structure and function
Selective Permeability
Amphipathic
Phospholipid Bilayer
Integral Proteins
A process in which a membrane allows some molecules to pass t…
A molecule that has both a hydrophilic region and a hydrophob…
Bi-layer that shelters the hydrophobic tails from water and e…
Proteins that penetrate the hydrophobic interior of the phosp…
Selective Permeability
A process in which a membrane allows some molecules to pass t…
Amphipathic
A molecule that has both a hydrophilic region and a hydrophob…
29 terms
Ap Biology Membrane Structure and Function: Chapter 7
Fluid Mosaic Model
Sandwich Model
Freeze Fracture Method
Amphipathic Phospholipids
Fluid: membrane held together by weak interactions... Mosaic: Ph…
Davson/Danielli (1935)... phospholipid bilayer between protein l…
revealed the structure of membranes interior
hydrophobic tail, hydrophilic head
Fluid Mosaic Model
Fluid: membrane held together by weak interactions... Mosaic: Ph…
Sandwich Model
Davson/Danielli (1935)... phospholipid bilayer between protein l…
31 terms
Plasma Membrane Structure & Function
Bulk Transport
Phagocytosis
Pinocytosis
Receptor Mediated Endocytosis
Active transport - use energy in AT. Transport of cellular pr…
Cell eating
Cell drinking
Iron-transfer - receptors - brings in
Bulk Transport
Active transport - use energy in AT. Transport of cellular pr…
Phagocytosis
Cell eating
1 of 10