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microbio > Physiologie et croissance bactérienne > Flashcards

Physiologie et croissance bactérienne Flashcards

1
Q

Besoins nutritionnels élementaires de la bactérie

A

Eau
Carbone
Azote
Soufre
Phosphore
Oligoéléments et minéraux

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2
Q

Bactéries autotrophes

A

Tirant leur carbone uniquement à partir de CO2

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3
Q

Bactéries hétérotrophes

A

Tirant leur carbone à partir de substances organiques (alcool, acide acétique, acide lactique, sucres divers)

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4
Q

Pourquoi la bactérie a besoin d’azote ?

A

pour synthétiser leurs protéines

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5
Q

Provenance de l’azote

A
  • Composés organiques azotés
  • Fixation de l’azote atmosphérique (N2)
  • Nitrites NO3
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6
Q

Provenance du souffre

A
  • Acides aminés contiennent du souffre
  • Sulfate (SO4)
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microbio (3 decks)

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