échanges membranaires (TP) Flashcards

1
Q

échange facile types mol

A

HYDROPHOBES!!
lipides
CO2/O2
hydrocarbures

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2
Q

échange avec aide types mol

A

ions
molécules polaires
avec protéines de transport

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3
Q

types de transport

A

passif et actif

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4
Q

transport passif

A

pas NRJ
+ C à - C (suis gradient)
X vésicule

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5
Q

transport actif

A

oui NRJ
- C à + C (contre gradient)
exception ^ transports vésiculaires

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6
Q

types de TP

A

diffusion simple
diffusion facilitée
osmose

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7
Q

diffusion simple types de mol

A

hydrophiles
sans aide
molécules pol / non liposolubles

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8
Q

osmose

A

la diffusion de l’eau

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9
Q

osmoses types

A

diff simple
diff facilitée

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10
Q

osmose simple

A

très failbe quantité
H2O molécule polaire

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11
Q

osmose facilitée

A

avec aquaporines (prot intégrées)

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12
Q

osmose concentration

A

++ [C] = – [H2O]
H2O va vers + eau libre vers - eau libre

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13
Q

osmolarité

A

concentration par litre soluté

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14
Q

pression osmotique

A

pression exercée par H2O sur membrane plasmique
+ gradient [C] + P

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15
Q

isotonique

A

cytosol et liquide extracell même [C]

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16
Q

hypotonique

A

solution a C plus petite que cytosol
entrée H2O

17
Q

hypertonique

A

solution a C plus grande que cytosol
sortie H2O

18
Q

cellule animale

A

hypo: lysée
iso: normale
hyper: crénelée

19
Q

celluke végétale

A

hypo: turgescente GOOD
iso: flasque
hyper: plasmolysée