cholestérol Flashcards

1
Q

cholestérol où

A

SLM membranes de cellules animales
pas intracell

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2
Q

position cholestérol?

A

insère entre ag de phospholipides
gr. hydroxyle avec gr. polaires

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3
Q

transport?

A

dans sang comme lipoprotéines (HDL/LDL)

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4
Q

HDL

A

haute densité

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5
Q

rôle cholestérol

A

X cristallisation ag
membrane rigide (4 cycles)
diminue perméabilité aux mol. hydrophiles
formation radeaux lipidiques

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6
Q

structure cholestérol

A

noyau de stéroïde
chaîne de carbone
tête hydroxyle

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