Enzymklasser Flashcards

1
Q

Hvilken klasse tilhører carboxylaser? Og hvorfor?

A

Ligaser, fordi stoffer bindes sammen med ATP

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2
Q

Hvilken klasse tilhører phosphorylaser og pyrophosphorylaser? Og hvorfor?

A

Transferaser, fordi inorganisk(e) phosphatgruppe(r) overføres til substrat

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3
Q

Hvilken enzymklasse tilhører synthetaser? Og hvorfor

A

Ligaser, da de binder stoffer sammen under brug af ATP

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4
Q

Hvad er kendetegnet ved ligaser?

A

Binder stoffer sammen vha. ATP

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5
Q

Hvilken enzymklasse tilhører phosphataser? Fx glukose-6-phosphatase? Og hvorfor?

A

Hydrolaser, fordi der fraspaltes phosphat vha. vand

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6
Q

Giv et eksempel på et enzym, der er en isomerase

A

Fx phosphoglucomutase, triosephosphat-isomerase, phosphoglycerat mutase

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7
Q

Giv et eksempel på et enzym, der er en lyase

A

Fx aldolase

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8
Q

Hvad er kendetegnet ved lyaser?

A

Spalter stof under dannelse af dobbeltbindinger (eller den modsatte reaktion)

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9
Q

Hvilken klasse hører kinaser til? Hvorfor?

A

Transferaser, fordi kinaser overfører Pi fra ATP til substrat

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10
Q

Hvilken klasse hører decarboxylaser til?

A

Lyaser (der dannes en dobbeltbinding i en spaltning uden ATP)

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11
Q

Hvilken klasse hører synthaser til? Og hvorfor?

A

Lyaser, fordi to stoffer bindes sammen uden ATP

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12
Q

Hvilken enzymklasser tilhører disse enzymer fra glykolysen? 1. Hexokinase 2. Aldolase 3. Glyceraldehyd 3-phosphat dehydrogenase 4. Enolase

A

Hexokinase: Transferase.
Aldolase: Lyase
Glyceraldehyd 3-phosphat dehydrogenase: Oxidoreductase
Enolase: Lyase

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13
Q

Hvilken generel funktion har enzym-gruppen kinaser?

A

Kinaser katalyserer overførsler af phosphoryl-grupper med ATP som donor.

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