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Study sets matching "biology membranes"

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Study sets matching "biology membranes"

30 terms
Membranes & Transport - AP Biology
aquaporin
bulk transport
carrier protein
channel protein
Channel protein through which water can diffuse across a memb…
Movement of substances too large for protein transport into o…
Protein that combines with an transports a molecule or ion ac…
Protein that forms a channel that allows a particular molecul…
aquaporin
Channel protein through which water can diffuse across a memb…
bulk transport
Movement of substances too large for protein transport into o…
51 terms
Campbell BIOLOGY - Chapter 7 (membranes)
plasma (cell) membrane
selective permeability
amphipathic
hydrophilic
phospholipid bilayer that surrounds cell, separates it from o…
process in which a membrane allows some molecules to pass thr…
when molecule has both hydrophobic and hydrophilic sections
head of phospholipid
plasma (cell) membrane
phospholipid bilayer that surrounds cell, separates it from o…
selective permeability
process in which a membrane allows some molecules to pass thr…
Biology: Membranes
Plasma Membrane
Phospholipid bilayer
Cholesterol
Two Types of Proteins
forms the outer thin, flexible, but stable layer of the cell,…
main component of the cell membrane: two layers of lipids, th…
(animal cell membranes) Keeps some small molecules from enter…
Intergral Proteins and Peripheral proteins
Plasma Membrane
forms the outer thin, flexible, but stable layer of the cell,…
Phospholipid bilayer
main component of the cell membrane: two layers of lipids, th…
15 terms
Biology : Membranes
An artificial membrane was made. It co…
Explain what causes the phospholipid m…
describe the property of the cell surf…
Osmosis has been described as a specia…
(i) Both membranes contain phospholipid / lipid (bilayer); 1…
Head hydrophilic/ attracted to water/ polar;... Tail hydrophobic…
Partially permeable / only allows water molecules through /... d…
Passive / does not require ATP;... R energy not required... movemen…
An artificial membrane was made. It co…
(i) Both membranes contain phospholipid / lipid (bilayer); 1…
Explain what causes the phospholipid m…
Head hydrophilic/ attracted to water/ polar;... Tail hydrophobic…
8 terms
Biology - Membranes
Cell membrane
Lipid bi-layer
Active Transport
Passive Transport
completely surrounds each cell, allows specific molecules int…
Cell membrane is made of 2 layers of lipids called a bi-layer.
The movement of substances across a membrane against a concen…
The movement of substances across a membrane without requirin…
Cell membrane
completely surrounds each cell, allows specific molecules int…
Lipid bi-layer
Cell membrane is made of 2 layers of lipids called a bi-layer.
39 terms
Biology-Membranes
Selective Permeability
Amphipathic
Fluid Mosaic Model
What primarily holds membranes together?
Membranes allow some substances to cross more easily than oth…
Has both hydrophilic and hydrophobic regions
Membrane is a mosaic of protein molecules bobbing in a fluid…
Hydrophobic interactions (weaker than covalent bonds)
Selective Permeability
Membranes allow some substances to cross more easily than oth…
Amphipathic
Has both hydrophilic and hydrophobic regions
31 terms
AS Biology membranes
cell membrane
phospholipid bilayer
phospholipid
protein
A thin, flexible barrier around a cell; regulates what enters…
A double layer of phospholipids that makes up plasma and orga…
A molecule that is a constituent of the inner bilayer of biol…
An organic compound that is made of one or more chains of ami…
cell membrane
A thin, flexible barrier around a cell; regulates what enters…
phospholipid bilayer
A double layer of phospholipids that makes up plasma and orga…
Membranes; Honors Biology Expectations
Describe the fluid mosaic structure of…
List five functions of membrane proteins
Explain how membranes exhibit selectiv…
Explain how the structure of phospholi…
The fluid mosaic model of a cell membrane structure consists…
Transport, enzymatic activity, signal transduction, cell-cell…
Membranes choose what passes through them
Phospholipids have hydrophobic tails and hydrophilic heads wh…
Describe the fluid mosaic structure of…
The fluid mosaic model of a cell membrane structure consists…
List five functions of membrane proteins
Transport, enzymatic activity, signal transduction, cell-cell…
122 terms
Membrane Biology
cell fractionation
homogenization
centrifuge
pellet
method of separating cell parts to study their function
disrupting cell membrane without damaging organelle
instrument spinning at high speeds to separate contents by de…
larger, more dense components of centrifuged tube
cell fractionation
method of separating cell parts to study their function
homogenization
disrupting cell membrane without damaging organelle
28 terms
Biology Membranes
3 components of plasma membranes
Role of phospholipids
Role of proteins
Role of Carbohydrates
Phospholipids, proteins, carbohydrates
Forms the fluid bilayer
transporting and creating enzymes
Forms glycolipids and glycoproteins , important in cell commu…
3 components of plasma membranes
Phospholipids, proteins, carbohydrates
Role of phospholipids
Forms the fluid bilayer
26 terms
SSFC Biology Lipids and membranes
Triglyceride (molecule)
Phospholipid (molecule)
Hydrophilic
Hydrophobic
A lipid composed of a glycerol molecule chemically bonded to…
Glycerol condensed to two fatty acids and a phosphate group.
An interaction where 2 groups are attracted to each other e.g…
An interaction where 2 groups are repelled from each other e.…
Triglyceride (molecule)
A lipid composed of a glycerol molecule chemically bonded to…
Phospholipid (molecule)
Glycerol condensed to two fatty acids and a phosphate group.
13 terms
Biology - Membranes
Draw and label a diagram to show the s…
Explain how the hydrophobic/hydrophili…
What does hydrophobic mean?
What does hydrophilic mean?
See attached palm card
The hydrophilic heads face there water, while the hydrophobic…
Not attracted to water, but are attracted to other hydrophobi…
Attracted to water.
Draw and label a diagram to show the s…
See attached palm card
Explain how the hydrophobic/hydrophili…
The hydrophilic heads face there water, while the hydrophobic…
15 terms
Biology: Membranes and Membrane Transport
To let all but not all materials throu…
During passive transport, substances w…
Osmosis is the movement of _____ from…
What part of the phospholipid is charg…
Semi-permeable
Higher to lower concentration
Water concentration, higher, lower
Phosphate head
To let all but not all materials throu…
Semi-permeable
During passive transport, substances w…
Higher to lower concentration
47 terms
Biology membranes
What elements do lipids contain?
What are the functions of lipids?
What are the two main groups of lipids?
Describe the feature of a phospholipid
Lipids contain carbon, hydrogen and oxygen
Insulation (neurones)... Sources of energy... Water proofing... Pro…
Triglycerides and phospholipids
Two fatty acid molecules and a phosphate group joined to a gl…
What elements do lipids contain?
Lipids contain carbon, hydrogen and oxygen
What are the functions of lipids?
Insulation (neurones)... Sources of energy... Water proofing... Pro…
22 terms
Biology - Membranes
Semi-permeable
Osmosis
Difussion
facilitated diffusion
...
Movement of water from high water concentration to low water…
Passive movement of solute from an area of high concentration…
Passive process that moves large/polar molecules via membrane…
Semi-permeable
...
Osmosis
Movement of water from high water concentration to low water…
73 terms
Biology (Membranes)
An atom can form up to __ single coval…
What is a covalent bond?
A(n) __ bond joins 2 pairs of electrons.
The innermost electron shell of an ato…
4
A covalent bond is one in which electron pairs are shared
Double covalent bond
2
An atom can form up to __ single coval…
4
What is a covalent bond?
A covalent bond is one in which electron pairs are shared
15 terms
Membranes - Biology
what does a membrane do?
what is a membrane composed of?
what is a bilayer?
what is a phospholipid?
encloses a living cell
a bilayer of phospholipids with embedded and attached proteins
a double layer
a lipid with a phosphate group
what does a membrane do?
encloses a living cell
what is a membrane composed of?
a bilayer of phospholipids with embedded and attached proteins
18 terms
Biology Membranes
hypertonic
hypotonic
endocytosis
exocytosis
molocules move from greater to lesser
molocules move from lesser to greater
taking in materials the membrane wants by folding pockets
dumping out materials the membrane doesnt want
hypertonic
molocules move from greater to lesser
hypotonic
molocules move from lesser to greater
60 terms
Biology Transport Across Membranes
flexible
balanced
equilibrium
by controlling what enters and leaves…
Cell membranes of unicellular organisms are _____ so the orga…
what is meant by homeostasis
homeostasis is also called
how does the plasma membrane help maintain homeostasis
flexible
Cell membranes of unicellular organisms are _____ so the orga…
balanced
what is meant by homeostasis
22 terms
Biology - Membranes
Semi-permeable
Osmosis
Difussion
facilitated diffusion
...
Movement of water from high water concentration to low water…
Passive movement of solute from an area of high concentration…
Passive process that moves large/polar molecules via membrane…
Semi-permeable
...
Osmosis
Movement of water from high water concentration to low water…
15 terms
Biology/Cell Membranes
PHOSPHOLIPID BILAYER
HYDROPHILIC
HYDROPHOBIC
HYPERTONIC solution
2 layers of phospholipid molecules that make up cell membrane
water "loving", all polar molecules are hydrophilic
water "fearing" , all non-polar molecules are hydrophobic
amount of solute (dissolved stuff in water) is HIGHER outside…
PHOSPHOLIPID BILAYER
2 layers of phospholipid molecules that make up cell membrane
HYDROPHILIC
water "loving", all polar molecules are hydrophilic
15 terms
Biology Membranes
Osmosis
Diffusion
Facilitated Diffusion
Active Transport
The net movement of water from a region of high water concent…
The net movement of a substance from a region of high concent…
The net movement of a substance from a region of high concent…
Dissolved substances moving against the concentration gradien…
Osmosis
The net movement of water from a region of high water concent…
Diffusion
The net movement of a substance from a region of high concent…
196 terms
AQA Biology - Cell Membranes
Draw the structure of a Eurkaryotic ce…
Draw and explain the structure of a ce…
Function of cell-surface membrane?
Draw and explain the structure of the…
~ Found on the surface of animal cells and inside the cell wa…
~ Regulates the movement of substances in and out of cells... ~…
~ Large protein surrounded by a double-membrane (nuclear enve…
Draw the structure of a Eurkaryotic ce…
Draw and explain the structure of a ce…
~ Found on the surface of animal cells and inside the cell wa…
22 terms
IB Biology II: Membranes
plasma membrane
cytoplasm
intracellular
extracellular
The flexible barrier found on the outside of cells that regul…
The fluid filled region outside the nucleus and inside the pl…
Inside the cell
Outside the cell
plasma membrane
The flexible barrier found on the outside of cells that regul…
cytoplasm
The fluid filled region outside the nucleus and inside the pl…
14 terms
Biology membranes
Osmosis
What is a cell made up of
Exocytosis
Hydrophilic
Water molecules move from high to low
Phospholipid bilayer
Cells release waste
When a substance can mix with water
Osmosis
Water molecules move from high to low
What is a cell made up of
Phospholipid bilayer
40 terms
biology membranes
What is the function of cholesterol wh…
Which part of the plasma membrane belo…
Which part of the plasma membrane belo…
Which part of a phospholipid is nonpol…
It stabilizes the membrane (so it doesn't come apart)... b) At…
fatty acid chains-that's why they face towards the inside of…
phosphate group - that's why they face outwards to be in cont…
the 2 fatty acid chains
What is the function of cholesterol wh…
It stabilizes the membrane (so it doesn't come apart)... b) At…
Which part of the plasma membrane belo…
fatty acid chains-that's why they face towards the inside of…
10 terms
Biology- Membranes
Which types of molecules can easily pa…
What are ways that a membrane's fluidi…
How does the presence of cholesterol a…
Define Diffusion and Osmosis in your o…
Small and Nonpolar molecules (Oxygen) can cross through easil…
Affected by:... 1. Fatty acid composition... 2. Membrane steroids…
...
Diffusion: The movement of a molecule from high to low concen…
Which types of molecules can easily pa…
Small and Nonpolar molecules (Oxygen) can cross through easil…
What are ways that a membrane's fluidi…
Affected by:... 1. Fatty acid composition... 2. Membrane steroids…
16 terms
[Biology] Movement across membrane
Diffusion
Facilitated Diffusion
Active Transport
Endocytosis
The net movement of a solute from a region of high concentrat…
The net movement of a substance across a plasma membrane via…
The energy-dependent movement of a substance against the conc…
The bulk movement of solids or liquids into a cell by engulfm…
Diffusion
The net movement of a solute from a region of high concentrat…
Facilitated Diffusion
The net movement of a substance across a plasma membrane via…
29 terms
Biology Chapter 5: Membranes
Phospholipid Bilayer
Fluid Mosaic Model
Transmembrane Proteins
Interior Protein Network
Plasma membrane layers composed of phospholipid molecules arr…
Mosaic of proteins floats in or on the fluid lipid bilayer li…
Proteins embedded in the membrane that serve as transporters…
membranes are structurally supported by intracellular protein…
Phospholipid Bilayer
Plasma membrane layers composed of phospholipid molecules arr…
Fluid Mosaic Model
Mosaic of proteins floats in or on the fluid lipid bilayer li…
11 terms
Biology Membranes
A microscope with a 4x objective lens…
What type of molecule forms a lipid bi…
Name three functions of the cell membr…
Diffusion is the movement of a substan…
40x
phospholipids
Encloses the contents of a cell, allows materials to enter an…
high concentration to an area of low concentration
A microscope with a 4x objective lens…
40x
What type of molecule forms a lipid bi…
phospholipids
29 terms
Biology: Membranes
What does it mean to be selectively pe…
What types of particles are (easily) a…
What types of particles are not easily…
What are the two types of transport?
To allow only the wanted or needed particles inside
- small particles... - uncharged particles... - things that follow…
- large particles... - charged particles (because the exterior i…
Active (hard) and passive (easy)
What does it mean to be selectively pe…
To allow only the wanted or needed particles inside
What types of particles are (easily) a…
- small particles... - uncharged particles... - things that follow…
19 terms
Biology, Cells and Cell Membranes
Osmosis
hypertonic solution
hypotonic solution
isotonic solution
Diffusion of water through a selectively permeable membrane
A solution in which the concentration of solutes is greater t…
A solution in which the concentration of solutes is less than…
A solution in which the concentration of solutes is essential…
Osmosis
Diffusion of water through a selectively permeable membrane
hypertonic solution
A solution in which the concentration of solutes is greater t…
20 terms
Cell Membrane - AP Biology
Selectively permeability
Osmosis
turgid
Amphipathic molecule
it allows some things to come through and some not
Diffusion of water through a selectively permeable membrane
swollen as from a fluid; bloated
A molecule that has both a hydrophilic region and a hydrophob…
Selectively permeability
it allows some things to come through and some not
Osmosis
Diffusion of water through a selectively permeable membrane
99 terms
Biology Test 4: Membranes
cell membrane
phospholipids
peripheral membrane proteins
Integral membrane proteins
protects cell, controls the cell's cytoplasmic contents (gate…
hydrophilic heads in contact with cytoplasm, hydrophobic tail…
temporarily associated proteins
permanently integrated into the cell membrane... hydrophobic reg…
cell membrane
protects cell, controls the cell's cytoplasmic contents (gate…
phospholipids
hydrophilic heads in contact with cytoplasm, hydrophobic tail…
13 terms
biology - membrane
osmosis
the plasma membrane
phospholipids
cholestrol
the passive diffusion of free water molecules across a semi p…
forms the boundary between inter-cellular and extra-cellular…
it is made up of a double layer of fatty ___________ interspe…
melocules lie between the phospholipids and prevent it from b…
osmosis
the passive diffusion of free water molecules across a semi p…
the plasma membrane
forms the boundary between inter-cellular and extra-cellular…
13 terms
Biology-Cell Membrane
Cell Membrane
Semipermeable
Phospholipid
Diffusion
A cell structure that controls which substances can enter or…
(of a membrane) selectively permeable, allows some substances…
A molecule that is a constituent of the inner bilayer of biol…
Movement of molecules from an area of higher concentration to…
Cell Membrane
A cell structure that controls which substances can enter or…
Semipermeable
(of a membrane) selectively permeable, allows some substances…
14 terms
Biological Membranes AS Biology
Role of membranes
Fluid Mosiac
Components of membrane
Phospholipid bilayer
Cell membranes regulate the movement of molecules into and ou…
Lipid bilayer is partially permeable, allowing only certain m…
Phospholipids - Form the fluid bilayer composing the majority…
Hydrophobic tails on inside and hydrophillic heads on outside.
Role of membranes
Cell membranes regulate the movement of molecules into and ou…
Fluid Mosiac
Lipid bilayer is partially permeable, allowing only certain m…
20 terms
Cell Membrane - AP Biology
Selectively permeability
Osmosis
turgid
Amphipathic molecule
it allows some things to come through and some not
Diffusion of water through a selectively permeable membrane
swollen as from a fluid; bloated
A molecule that has both a hydrophilic region and a hydrophob…
Selectively permeability
it allows some things to come through and some not
Osmosis
Diffusion of water through a selectively permeable membrane
Biology - Membranes Test
What are the characteristics common to…
What are the differences between eukar…
Explain the differences between hypert…
4. What are the differences between pa…
membrane (or a place to store data) (nucleus or nucleoid)... cyt…
Prokaryotes have no membrane-bound organelles... Eukaryotes do h…
Tonicity: the relative solute concentrations of two liquids... H…
Passive transport ... No additional energy required... Always moves…
What are the characteristics common to…
membrane (or a place to store data) (nucleus or nucleoid)... cyt…
What are the differences between eukar…
Prokaryotes have no membrane-bound organelles... Eukaryotes do h…
20 terms
AP Biology Membranes - Torres
Selectively permeability
Osmosis
Turgid
Amphipathic Molecule
A selectively permeable cell membrane is one that allows cert…
Osmosis is the spontaneous net movement of solvent molecules…
adjective - swollen and distended or congested.
molecule that possesses both hydrophobic and hydrophilic elem…
Selectively permeability
A selectively permeable cell membrane is one that allows cert…
Osmosis
Osmosis is the spontaneous net movement of solvent molecules…
24 terms
Biology -- Membrane
Membrane is made up of
Tails of phosopholipids are____
Top of molecule is ___ and bottom is _…
define: hydrophilic
millions of phosopholipids
unsaturated because they are bent
polar; nonpolar
polar molecules that will disolve in water
Membrane is made up of
millions of phosopholipids
Tails of phosopholipids are____
unsaturated because they are bent
Cell Biology 380 Membranes
Activation Energy
Enzyme lowers activation energy
phosphoanhydride bond
function
What lowers activation energy?
What type of bond gives energy to create a positive delta G?
structure leads to _____
Activation Energy
Enzyme lowers activation energy
What lowers activation energy?
5 terms
biology-membranes
hypertonis
hypotonic
turgid
plasmolysis
higher concetration of solute, low concentration of water
higher concentration of water, low concentration of solute
has taken in all the water it can and swells up
plant cell that decreases in size in the cell wall
hypertonis
higher concetration of solute, low concentration of water
hypotonic
higher concentration of water, low concentration of solute
11 terms
Biology - Membrane
Membrane function
Membrane composition
Passage through
Diffusion
- Aka plasma membrane... - Most organelles formed from membrane…
- Fluid structures... - Composed of phospholipid bilayer
- Tiny molecules and oil-soluble substances easily pass throu…
Passive net movement of molecules from high concentration to…
Membrane function
- Aka plasma membrane... - Most organelles formed from membrane…
Membrane composition
- Fluid structures... - Composed of phospholipid bilayer
42 terms
Biology - Biological Membranes
Intrinsic protein
Extrinsic protein
Transmembrane protein
Glycoprotein
embedded in the membrane
entirely outside the membrane
proteins that extend from one side of the membrane to the other
*protein molecule* with a *polysaccharide* (carbohydrate) cha…
Intrinsic protein
embedded in the membrane
Extrinsic protein
entirely outside the membrane
21 terms
Cell Biology #1 (Membranes)
Cell Membrane
Phospholipid
Hydrophobic
Hydrophilic
the thin bilayer of phospholipids that surround the cell and…
A lipid molecule with a polar end (phosphate head) and a non-…
avoidance of (fear of) water
attraction to (love of) water
Cell Membrane
the thin bilayer of phospholipids that surround the cell and…
Phospholipid
A lipid molecule with a polar end (phosphate head) and a non-…
18 terms
Membranes; Honors Biology Expectations
Describe the fluid mosaic structure of…
List five functions of membrane proteins
Explain how membranes exhibit selectiv…
Explain how the structure of phospholi…
The fluid mosaic model of a cell membrane structure consists…
Transport, enzymatic activity, signal transduction, cell-cell…
Membranes choose what passes through them
Phospholipids have hydrophobic tails and hydrophilic heads wh…
Describe the fluid mosaic structure of…
The fluid mosaic model of a cell membrane structure consists…
List five functions of membrane proteins
Transport, enzymatic activity, signal transduction, cell-cell…
23 terms
Cell Biology - Membranes and Transport
selectively permeable
solvent
solute
hypertonic
describing cell membranes, allows some, but not all, things t…
dissolved material
substance the dissolves (water in organic solutions)
having a GREATER concentration of solute than the solution on…
selectively permeable
describing cell membranes, allows some, but not all, things t…
solvent
dissolved material
61 terms
9th Grade Biology Membranes
Phospholipids
Amphipathic Molecules
Fluid Mosaic Model
Membranes
-the most abundant lipid in the plasma membrane... -amphipathic…
-have hydrophillic and hydrophobic regions
-states that a membrane is a fluid structure with a "mosaic"…
-acts as a boundary in an organism... -collage of different prot…
Phospholipids
-the most abundant lipid in the plasma membrane... -amphipathic…
Amphipathic Molecules
-have hydrophillic and hydrophobic regions
10 terms
Cell Membranes and Cell Biology
phospholipid bilayer
selective permeability
fluid mosaic model
simple diffusion
some substances crosse a membrane more easily than others; sm…
proposition that at least some proteins span the membrane ins…
refers to a process whereby a substance passes through a memb…
phospholipid bilayer
selective permeability
some substances crosse a membrane more easily than others; sm…
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