
Bioquímica p1
Authored by Uriel Mujica
Chemistry
University
Used 4+ times

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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la fórmula química del agua?
H₂O₂
H₂O
HO
O₂
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El agua es considerada un “solvente universal” porque:
Disuelve casi todas las sustancias polares.
Solo disuelve grasas.
No tiene olor ni color.
Su pH es siempre ácido.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué significa actividad de agua (aw)?
La cantidad de agua total en un alimento.
El pH del agua.
El porcentaje de agua libre disponible para reacciones químicas y crecimiento microbiano.
La conductividad eléctrica del agua.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Con qué valor mínimo de **aw** pueden crecer los mohos?
1.0
0.95
0.88
0.60
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué propiedad del agua permite que ascienda en contra de la gravedad en tallos de plantas?
Capacidad calorífica
Capilaridad
Conductividad eléctrica
Densidad
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El jabon tiene un pH de
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un alimento ácido como el vinagre tiene un pH aproximado de:
6.5
4.0
2.5
8.0
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