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BCM > bcm32 > Flashcards

bcm32 Flashcards

1
Q

trigylcerol storage

A

adipocytes

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2
Q

lipid lipid intereaction

A

vdw

dipoles

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3
Q

head = phillic + tail = phobic=?

A

amphipathic

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4
Q

3 main lipid groups

A

glycerophospholipids
terpenes
sphingolipids

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5
Q

where are pgls made

A

surface of ser

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6
Q

how pgls distributed

A

assymetrically

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7
Q

fippases

A

recognise lipids with amine head and move to cytosolic leaflet use atp

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8
Q

scramblase

A

transverse flipflop no atp

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9
Q

properties of phosphatidyl choline

A

main pgl in eukaryotes

=lecithins

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10
Q

properties of phosphatidyl glycerol

A

cross linked to other lipids via head

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11
Q

properties of phosphatidyl serine

A

negative charge contributes to membrane potential

- presence in ex leaflet = apoptosis

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12
Q

properties of phosphatifyl ethanol amine

A

main pgl in bacteria

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13
Q

properties of phosphatidyl inositol

A

cell signaling pathway.

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14
Q

olive oil

A

oleic acid

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15
Q

cocoa butter

A

unusual very saturated

stearic acid

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16
Q

pokilotherms

A

cold water fish plants

unsaturated fats

17
Q

homeotherms

A

birds mammals

saturated fats

18
Q

sphingolipid structuralescription

A

sphingosine backbone replaces glycerol and 1 fatty acid

19
Q

sphingolipid analogue of phosphatidyl choline

A

sphingomyeline

20
Q

sphingolipid function description

A

nerve and brain cell membranes

21
Q

glycolipids role, properties, example

A

ns
compact and impermeable, may form lipid raft
galactocerebroside, myelin

22
Q

terpenes examples

A 
terpenoid
isoprenoid
prenyllipid
sterols and steroids
isoprene
retinal vitamin 
squalene
cholesterol
23
Q

lauric acid

A

12 carbon mp 43

24
Q

myristic acid

A

14 carbon 54mp

25
Q

palmitic acid

A

16 carbon 63mp

26
Q

stearic acid

A

18 carbon 70mp

27
Q

steric acid type mp

A

saturated 70mp

28
Q

oleic acid

A

monounsaturated 13mp

29
Q

linolenic acid

A

polyunsaturated -10

30
Q

prenyl groups

A

covalently link to terpenes to anchor them to membrane

31
Q

cholesterol effect on fluidity

A

conflicting

ring steroids stiffen-less fluid but also interfere with crystallisation of fatty acid chains and prevent freezing

32
Q

rab protein

A

protein family of gtpases that regulate many steps of membrane traffic and vesciles

33
Q

methanopyrus

A

archea live in black smokers

methyl groups reduce rotation

34
Q

thermoplasma

A 
no cell wall
lipids span membrane
lives at ph2 
60 degrees
gel like monolayer 
not fluid mosaic
35
Q

hymothermophiles membrane

A

gel like transmembrane lipid

36
Q

archea membrane lipid

A

terpene alcohol side chain
often lack head group
have ether bonds
allows to resit hydrolysis in extreme conditions

BCM (27 decks)

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