Síntesis colesterol y metabolismo aa Flashcards

1
Q

A partir de colesterol se pueden formar:

A
  • Vitamina D
  • Sales biliares
  • Lipoproteínas: HDL, LDL, VLDL
    *
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2
Q

la síntesis del colesterol comienza gracias a la

A

HMG-CoA-Reductasa

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3
Q

Pasos de la síntesis de colesterol:

A
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4
Q

50% de masa celular son:

A

Proteínas

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5
Q

En condiciones de ayuno prolongado las proteínas:

A

Se rompe para obtener energía

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6
Q

Aminoácidos que necesitan 3-fosfoglicerato para ser producidos:

A

serina, glicina, cisteína

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7
Q

A partir de glutamato se pueden obtener:

A

aspartato, alfa-cetoglutarato, alanina, arginina, prolina, glutamina

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8
Q

¿cómo eliminamos el exceso de nitrógeno?

A

A través de la urea y ácido úrico

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9
Q

Aa esenciales:

Se obtienen de la dieta

A

histidina, isoleucina, leucina, lisina, metionina, fenilalanina, treonina, triptófano y valina

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10
Q

Aa no esenciales

Los producimos

A

alanina, arginina, asparagina, ácido aspártico, cisteína, ácido glutámico, glutamina, glicina, prolina, serina y tirosina.

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11
Q

En un individuo sano el nitrógeno consumido es menor/mayor que el deshechado

A

mayor
BALANCE POSITIVO

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12
Q

El colesterol tiene:

A

27 carbonos

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