membrane structure

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energy transformation, organizing chemical reactions, talking to the environment around it, transportation, endo and exocytosis, osmosis, metastasis

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energy transformation, organizing chemical reactions, talking to the environment around it, transportation, endo and exocytosis, osmosis, metastasis

cell membranes are important for...

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nonpolar region of phospholipid molecules

<p>what is A</p>

what is A

<p>what is A</p>
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polar region of phospholipid molecules

<p>what is B</p>

what is B

<p>what is B</p>
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membrane channel

<p>what is C</p>

what is C

<p>what is C</p>
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carbohydrate chains

<p>what is D</p>

what is D

<p>what is D</p>
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receptor molecule

<p>what is E</p>

what is E

<p>what is E</p>
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external membrane surface

<p>what is F</p>

what is F

<p>what is F</p>
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phospholipid bilayer

<p>what is G</p>

what is G

<p>what is G</p>
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internal membrane surface

<p>what is H</p>

what is H

<p>what is H</p>
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cholesterol

<p>what is I</p>

what is I

<p>what is I</p>
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cytoskeleton

<p>what is J</p>

what is J

<p>what is J</p>
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no

do prokaryotes have membrane bound organelles?

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longer hydrocarbon FAT and cholesterol

what makes the plasma membrane more rigid?

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gives support and anchors proteins so that they don't move

what does the cytoskeleton do for the plasma membrane?

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plasma membrane

encloses the cell, defines its boundaries, and maintains the essential differences between the cytosol and extracellular environment

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dynamic structure

what does it mean when something is not static, move about in the plane of the membrane

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amphiphilic

is the lipid bilayer hydrophobic, hydrophilic, or amphiphilic?

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amphiphilic

has hydrophobic and hydrophilic properties

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glycerol head

which part of the lipid bilayer is hydrophilic

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fatty acid tail

which part of the lipid bilayer is hydrophobic?

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sealed like a ball

is the bilayer energetically favorable when it is sealed by being triggered by water or when it is flat?

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fluidity

the ease of which lipid molecules move within the plane of the bilayer

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flexion

lipid tails moving side to side

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rotation

lipid tail rotates

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length of hydrocarbon tail and number of double bonds

what does fluidity depend on when in relation to the phospholipid composition?

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unsaturated

what is it when the hydrocarbon tail contains at least one double bond?

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saturated

what is it when the hydrocarbon tail does not contain any double bonds?

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unsaturated

is vegetable oil saturated or unsaturated?

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saturated

is margarine saturated or unsaturated?

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cholesterol

what is found in animal cells where the fluidity is modulated by its inclusion which is insoluble. It also fills the spaces between neighboring phospholipids by the kinks

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scamblase

what removes selected phospholipids from one half of the lipid bilayer and insert them in the other? This can result the new phospholipids to be redistributed equally in the membrane

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flippase

what is housed in the golgi, removes more specific phospholipids from the noncytosolic monolayer and flips them to the cytosolic side which allows the outer membrane to be larger?

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peripheral membrane protein

types of protein that are temporarily associated with the plasma membrane; can stick to a small portion of the lipid bilayer or to an integral protein

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integral membrane protein

permanently embedded in the plasma membrane' can form transmembrane proteins or monotopic protein which attach to only one side

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transmembrane proteins

what protein crosses through the lipid bilayer all the time that can have covalent attachment of a fatty acid chain that inserts into the cytosolic monolayer of bilayer

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GPI anchor

what allows proteins to be on non-cytosolic side?

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detergent

what is a small amphipathic lipid molecule that can disrupt the lipid bilayer and separates proteins from phospholipids

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carbohydrate layer

<p>what is I</p>

what is I

<p>what is I</p>
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lipid bilayer

<p>what is II</p>

what is II

<p>what is II</p>
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glycolipid

<p>what is III</p>

what is III

<p>what is III</p>
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transmembrane glycoprotein

<p>what is IV</p>

what is IV

<p>what is IV</p>
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adsorbed glycoprotein

<p>what is V</p>

what is V

<p>what is V</p>
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transmembrane proteoglycan

<p>what is VI</p>

what is VI

<p>what is VI</p>
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glycoprotein

what type of protein is made when there are short oligosaccharides side chains attached?

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proteoglycan (heavily glycosylated)

what type of protein is made when there are long polysaccharide side chains attached?

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glycocalyx

what do the glycoprotein and proteoglycan make up together?

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adsorption

what is it when a slimy surface is made to allow movement?

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lectin

a type of receptor protein that binds to carbohydrates on cell and allow for interactions (cell recognition)

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fluorescence recovery after photobleaching

what is FRAP?

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fluorescent antibody or GFP (green fluorescent protein)

what two things can be used to label a protein that interacts with the membrane?

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not able to see any fluorescence and the bleach is irreversible

what happens when there is excess radiation with intense light on a small patch of membrane?

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