metabolism energetic Flashcards

1
Q

De ce cofactor este nevoie la enzimele ce utilizeaza ATP?

A

cofactorul Mg2+

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2
Q

Cel mai important donor de energie libera

A

ATP

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3
Q

Ce roluri mai are ATP

A

rol structural

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4
Q

ce rol are atp in activarea tiaminei ?

A

donor de pirofosfat - Tpp

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5
Q

ce rol are atp in enzimele clasei kinazelor?

A

donor de gr fosfat

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6
Q

ce rol are atp in reactile de activare a acizilor grasi?

A

donor de amp

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7
Q

ce rol are atp in sinteza s-adenozil-metioninei?

A

donor de adenozina

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8
Q

De ce cofactor au nevoie enzimele ce util gtp?

A

cofactorul mg2+

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9
Q

Ce rol are gtp in sinteza glucozei?

A

donor de fosfat

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10
Q

ce rol are gtp in metabolismul glucidic?

A

donor de gmp

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11
Q

ce rol are gtp in activarea mitoc a acizilor grasi?

A

donor de gdp

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12
Q

ce fel de turn-over are atp?

A

accelerat

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13
Q

Care e scopul final al reactiilor metab energetic?

A

resinteza atp

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14
Q

Ce cant de energie este utilizata pentru regenerarea atp?

A

31 kJ/mol

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15
Q

prin cate metode se poate regenera atp?

A

2 metode

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16
Q

ce presupune fosforilarea la nivel de substrat?

A

daca ii zice la nivel de substrat, logic ca utilizeaza energia provenit de la un alt compus macroergic

17
Q

ce presupune fosforilarea oxidativa la nivel mitocondrial?

A

utilizeaza energia unui gradient de protoni pentru a fosforila adp

18
Q

unde este importanta regwnerarea la nv de substrat?

A

la nivelul tesuturilor fara mitoc

19
Q

3 exemple de regenerare la nivel de substrat

A

succinil-coa -> succinat (= gtp, krebs)
1,3 dpg-> fosfogricerat (= atp, glicoliza)
fosfoenolpiruvat -> piruvat (=atp, glicoliza)

20
Q

De unde provine O2 in lantul mitoc?

A

din respiratie

21
Q

ce se intampla in lantul respirator?

A

se oxideaza enzimele lantului si se produxe un gradient de protoni care vor utiliza atp- sintetaza pentru a produxe atp