vitaminas Flashcards

1
Q

nutrimentos orgánicos necesarios en pequeñas cantidades para funciones bioquímicas q no en general no se pueden sintetizar en organismo y deben contraerse en dieta

A

vitaminas

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2
Q

única vitamina q si podemos sintetizar

A

vitamina D

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3
Q

vitaminas liposolubles

A

A (retinoides)
D(colecalciferol)
E (tocoferoles, tocotrienoles)
K (filoloquinona, menaquinona)

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4
Q

vitaminas hidrosolubles

A

C y complejo B:
B1, B2, B3, B6, biotina, acido pantotenico, acido folico, B12

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5
Q

vitamina A es un

A

isopreno

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6
Q

metabolismo de la vitamina A

A

retinol—–>retinal——>acido todo-trans-retinoico

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7
Q

principal sitio de almacenamiento de la vitamina A

A

hígado

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8
Q

vitamina D es una

A

hormona

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9
Q

forma activa de la vitamina D

A

calcitriol /
1,25-dihidroxicolecalciferol

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10
Q

precursores de la vitamina D

A

colecalciferol (vitamina D3)
ergocalciferol (vitamina D2)

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11
Q

precursor primario q viene del metabolismo del colesterol

A

7-dehidrocolesterol

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12
Q

sintesis de la vitamina D en la piel

A

7-deshidrocolesterol——–>previtamina D (por luz UVB)——>vitamina D3 o colecalciferol o calciol

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13
Q

precursor de la vitamina D q sale de la piel

A

vitamina D3

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