Ribosomen Flashcards

1
Q

Ribosomen

A

Plaats waar eiwitsynthese plaatsgrijpt

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2
Q

Locaties ribosomen

A

In cytoplasma
Op RER
Op kernmembraan

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3
Q

Opbouw ribosoom

A

2 subeenheden

  • 60S
  • 40S
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4
Q

60S subeenheid ribosoom

A

Grote eenheid
Bevat 28S, 5,8S en 5S rRNA
Bevat 45-tal proteïnen

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5
Q

40S subeenheid ribosoom

A

Kleine eenheid
Bevat 18S rRNA
Bevat 30-tal proteïnen

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6
Q

Grootte

A

Doorsnede ongeveer 30 nm

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7
Q

Ribosomen in LM

A

Basofiele kleurreactie

Donker in HE-coupe

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8
Q

Initiatie eiwitsynthese

A

mRNA bindt met meerdere ribosomen

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9
Q

Polysoom

A

Meerdere ribosomen gebonden op mRNA

Elk ribosoom maakt zelfde eiwit

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10
Q

Translatie

A

mRNA codeert per 3 nucleotiden voor 1 aminozuur

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11
Q

rRNA’s

A

Dragen de aminozuren aan

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