1. Agua y pH Flashcards

1
Q

matriz biológica que envuelve elementos para la vida

A

agua

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2
Q

principal componente de caldo primigenio

A

agua líquida

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3
Q

de donde viene la atmósfera primitiva

A

evaporación de océanos

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4
Q

primeras biomoleculas vienen de

A

actividad eléctrica de atmósfera primitiva

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5
Q

porcentaje y litros de agua en ser humano de 70kg

A

70% y 50L

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6
Q

solvente donde se llevan a cabo las reacciones de síntesis y degradación de biomoleculas.

A

agua

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7
Q

el agua contribuye a

A

actividad enzima tica por sus iones
termoregulacion
equilibrio ácido base
trasporte de moléculas

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8
Q

porcentajes de agua en la tierra

A
70% total de tierra:
95% mares y océanos
2% subterráneos
2% glaciares
1% compone atmósfera
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9
Q

del total de agua cuánto es agua dulce

A

3%

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10
Q

los enlaces de agua son

A

covalente simple (cumplen con el octeto)

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11
Q

longitud de puente de hidrógeno es

A

.186nm

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12
Q

cuantos kJ/mol se necesitan para rompen un puente de hidrógeno

A

23kJ/mol

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13
Q

kJ/mol necesarios para romper enlace covalente

A

470kJ/mol

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14
Q

Keq=

A

[H][OH]/ (mol/L)

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15
Q

pH=

A

-log[H]

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16
Q

pH fisiológico

A

7.36-7.44

17
Q

tampon intracelular

A

fosfatos(HPO4)

18
Q

tampon extracelular

A

bicarbonato( HCO3)