CICLO DE KREBS Flashcards

1
Q

EL CICLO DE KREBS ES ANABOLICO O CATABOLICO

A

es anfibolica, es catabolica y anabolica

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2
Q

catabolismo en el ciclo de krebs

A

oxidacion de glucosa, acidos grasos y aminiacidos hasta CO2 y H2O
REQUIERE DE O2

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3
Q

anabolismo en ciclo de krebs

A

sus intermediarios oueden ser extraidos para vias anabolicas

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4
Q

citrato se extrae para la sintesis de …

A

lipidos

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5
Q

el alfacetoglutarato se extrae para la sintesis de …

A

glutamati y a suvez para purinas

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6
Q

el succinil cosa se extrae para la sintesis de …

A

porfirinas que son precurosres hemo d ela hemoglobina y citocromos

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7
Q

el oxalacetato se extrae para la …

A

gluconeogenesis y sintesis de aspartato que es precursos de aminoacidos y pirimidinas

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8
Q

que celulas no pueden realizarlo

A

loa eritrocitos pues es mitocondrial

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9
Q

combustible del ciclo del krebs

A

acetil coa que se puede obtener d ela b-oxidaciom (cuandi no hay carbs disponibles) o de la piruvato deshidrogenasa con carbs disponibles

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10
Q

piruvato deshidrogenasa PDH

A

cataliza una reaccion irreversible, la descarbocilacion oxidativa del piruvato

complejo enzimatico formado de E1, E2 y E3

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11
Q

coenzimas de la piruvato deshidrogenasa

A

requiere de 5 coenzimas: tiamina pirofosfato, lipoato, coa, nad y fad

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12
Q

productos de la piruvato deshidrogenasa

A

acetil coa, NADH y CO2

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13
Q

pasos de krebs

A

citrato sintetasa
aconitasa
isocitrato deshidrogenasa
a-cetoglutarato deshidrogenasa
succinil coa sintetasa

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14
Q

pasos ireversibles d ekrebs

A

1)citrato sintasa –> condensacion
3)isocitrato deshidrogenasa –> descarboxilacion oxidativa
4) alfa ceto glutarato deshidrigenasa –> descarboxilacion oxidativa

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15
Q
A
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