Prueba 2 Microbiologia alimentos

Quiz
•
Biology
•
University
•
Hard
CONTRERAS MARCELO
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la tierra profunda, el factor limitante de la vida mas importante es:
Los nutrientes
El agua
La temperatura
El oxigeno
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Respecto de la flora normal del sistema digestivo, podemos señalar que la mayor diversidad la encontramos en:
El esófago
El estomago
El instestino delgado
El colon
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las exotoxinas, en el organismo, se caracterizan por:
No estimular la formación de antitoxinas
Producir fiebre
Toxicidad debil
Su estructura corresponde a un polipeptido
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Frente a la invasión bacteriana, el sistema inmune:
Responde solo produciendo anticuerpos
Solo responde a través de los macrófagos
Responde solo con la respuesta celular
Responde mas rápido si presenta células de memoria
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En el alimento, las bacterias necesitan un porcentaje de humedad relativa H.R.:
Mayor al 80%
Menor de 10%
Mayor al 20%
Mayor al 90%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En las ETAs el genero bacteriano mas frecuente en Chile es:
Shigella
Salmonella
Campylobacter
Vibrio
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Los indicadores bacterianos de calidad sanitaria del alimento se seleccionan por:
Resistencia
Grupo taxonómico
Especificidad
Sensibilidad
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