Lipides Cc2 Flashcards

1
Q

Les lipides

A

Solubilité nul/faible
Solvant apolaire/hydrophobe
Interet de :
-structure (mb plasmique)
-de reserve (fabrication ATP)
-d’activité biologique (certaines hormones)

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2
Q

Si oxydable par l’azote ou le permenganate

A

Ce sont des AGI

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3
Q

Les AG + soude de potasse

A

Donne des sels d’acides gras

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4
Q

Points de fusion des acyls glycerols (triglycerides)

A

+ il y a d’AG, plus le pts de fusion est grand, + ils y a de liaison plus il est elevé, plus il y a d’insaturation moins il est elevé

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5
Q

Effet de la presence de potasse sur les triglycerides

A

Saponification

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6
Q

Hydrolise enzymatique

A

Avec enzyme pancreatique
Hydrolise en AG1, AG3

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7
Q

Serine

A

COOH-CH-NH-CH2-OH

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8
Q

Ethanolamine

A

OH-CH2-CH2-NH2

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9
Q

Choline

A

OH-CH2-CH2-N+-(CH2)3

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10
Q

Hydrolise alcaline douce

A

Liberation AG

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11
Q

Hydrolise alcaline forte

A

AG + P + glycerol

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12
Q

Phospholipase A1

A

Hydrolise liaison ester entre C1-AG1

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13
Q

Phospholipase A2

A

Hydrolise AG2

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14
Q

Phospholipase C

A

Liaison entre glycerol et phosphate

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15
Q

Phospholipase D

A

Liaison entre phosphore et OH

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16
Q

LDL

A

Amène cho vers cellules

17
Q

HDL

A

Amène cho vers le foie (eliminer via la bile et les sels biliaires)

18
Q

Les lipoproteines

A

Permettent de vehiculer les molécules hydrophobe dans le sang

19
Q

Polaire -apolaire

A

Plipides - chol - AG - TG - Ester de chol