Biologines Membranos Flashcards

1
Q

Sudėtis

A

Lipidai, baltymai ir angleviandeniai

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2
Q

Pagrindiniai lipidai

A

Fosfolipidai, glikolipidai, cholesterolis

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3
Q
  • glikolipidai
  • cholesterolis
  • glikoproteinas
A
  • apsaugine funkcija
  • sumazina laiduma lasteleje
  • padeda atpazinti lasteles
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4
Q

Kanalo baltymai

A

Padeda tam tikrom medziagom ir jonams pereiti pro plazmine membrana ir nenaudoja ATP energijos

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5
Q

Baltymai nesikliai

A

Prisijungia ir pernesa tam tikras molekules naudojant ATP energija

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6
Q
  • pavirsiniai baltymai

* integralus

A
  • baltymai prie membranos prisijungia silpnai todel nuo jos lengvai pasalinami pakeitus tirpalo pH
  • baltymai viena ar kelis kartus perveria membrana
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7
Q

Pasivi pernasa

A

Difuzija - judejimas is didesnes i mazesne koncentracija

Osmosas - vandens molekuliu judejimas is mazesnes i didesne koncentracija

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8
Q

Aktyvi pernasa

A

Endocitoze , fagocitoze, pinocitoze, egzocitoze

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9
Q

Endocitoze

A

Lastele savo plazmolema apgaubia isoreje esancia medziaga ir puslele itraukia i citoplazma

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10
Q

Fagocitoze

A

I lastele patenka plazmolemos supakuotos stambios, kietos medziagos ir su jomis susilieja lizosomos ir i jas isskiria fermentus. Kai sie baigia produktas isiurbamas i citoplazma

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11
Q

Pinocitoze

A

I lastele paimama skystos medziagos su jomis susilieja lizosoma ir i jas isskiria fermentus. Galutini produkta isiurbia i citoplazma

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12
Q

Egzocitoze

A

Sekrecine puslele arteja prie plazmolemos tada susilieja su plazmolema ir sekretas isskiriamas i lasteles isore

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13
Q

Osmoso tirpalai

A

Izotoninis - kai abiejose membranose pusese koncentracija tokia pati
Hipotoninis - kai i lastele vandens daugiau ieina negu iseina ir lastele ispampsta ir net gali susprogti
Hipertoninis - kai koncentracija yra didesne negu lasteleje lastele susirauksleja nes neturi vandens

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14
Q

Plazmolize

A

Kai lastele netenka vandens

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15
Q

Turgoras

A

Itempta lasteles busena susidarant pleciantis osmosiskai vandens molekules siurbanciai citoplazmai

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