week 9 (13) Flashcards

Fotosyntese

1
Q

Hvad er fototrofe organismer?

A

Organismer der kan lave fotosyntese (planter, alger, cyanobakterier, lilla svovl bakterier)

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2
Q

Hvad skabte ozonlaget?

A

Oxygen

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3
Q

Hvad gør ozonlaget?

A

Beskytter mod UV stråler (UV-B og UV-C)

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4
Q

Hvor kommer energi fra i fotosyntese?

A

Lys

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5
Q

Hvordan sannes ATP i fotosyntese?

A

ATP dannes ved oxidativ fosforylering

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6
Q

Hvad er formlen for fotosyntese?

A

6CO2 + 6H2O –> C6H12O6 + 6O2

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7
Q

Hvad gør chlorophyll?

A

Høster lysenergi

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8
Q

Hvad er carotenoider?

A

Accessory pigments
Sidder tæt sammen med chlorophyll
Primær funktion: beskyttelse mod fotooxidation

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9
Q

Hvad hedder de to typer af fotosyntese?

A

Anoxygen og oxygen

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10
Q

Hvad gør et light-harvesting complex?

A

Leverer energi til at excitere en elektron i reaktions-centeret (RC)

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11
Q

Hvilke fotosyntese systemer er der?

A

Fotosystem I, fotosystem II, fotosystem I + II

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12
Q

Hvilke(t) fotosystem er oxygen fotosyntese?

A

Fotosystem I + II

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13
Q

Hvilke(t) fotosystem er anoxygen fotosyntese?

A

Fotosystem I og fotosystem II

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14
Q

Hvad hedder de fire cykluser/pathways der bruges til CO2 fixering? (måder at omdanne CO2 til O2)

A

Calvin cyklus
Reverse TCA cyklus
Hydroxypropionate pathway
Reductive acetyl-CoA pathway

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15
Q

Hvor binder CO2 i calvin cyklusen?

A

RuBisCO

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16
Q

Hvad dannes i Calvin cyklusen?

17
Q

Hvad dannes inden fructose tages ud af Calvin cyklusen?

A

Glyceraldehyd-3-fosfat

18
Q

Hvad er gluconeogenese?

A

Omvendt Embden-Meyerhof pathway (Pyruvat –> glukose)

19
Q

Hvad er revers TCA cyklus?

A

Omvendt citronsyre cyklus