
Preguntas comprobación Agua/Lípidos
Authored by Yumy González
Chemistry
Professional Development
Used 3+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Son funciones biológicas del agua
Solvente universal y regulación de la temperatura corporal
Agente emulsificante y participación en reacciones bioquímicas
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Son características de la molécula de agua
Cuatro orbitales sp3 ubicados en forma tetraédrica y formación de puentes de hidrógeno con otras moléculas de agua
Ángulo de enlace 109.5 grados y densidad de carga negativa desplazada hacia los átomos de hidrógeno
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
¿El estado de agregación del agua está dado por la intensidad y cantidad de puentes de hidrógeno?
Si
No
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
¿Si adicionamos sal al agua podemos asegurar que el punto de ebullición será de 100 grados Celsius?
Si
No
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
¿De acuerdo a su valor de actividad de agua, cuál debemos esperar que sea un alimento menos perecedero?
Aw=0.7
Aw=0.95
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Los lípidos conocidos como "aceites" presentan puntos de fusión relativamente bajos es por eso que tienen tendencia a ser:
Sólidos a temperatura ambiente
Líquidos a temperatura ambiente
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Son lípidos saponificables :
Grasas, aceites, ceras y fosfolípidos
Esteroles, pigmentos, prostaglandinas
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