Control de microorganismos

Control de microorganismos

 Control de microorganismos
1. El tiempo de muerte termal de una suspensión de esporas de Bacillus subtilis es 30 minutos
en calor seco y menos de 10 minutos en el autoclave. ¿Qué tipo de calor es más efectivo y
por qué? (2 puntos)
2. Si la pasteurización no logra una esterilización, ¿Por qué se utiliza para tratar comidas? (2
3. ¿Cómo la sal y el azúcar pueden preservar comidas? Nombre alguna comida que se preserve
con azúcar y otra que se preserve con sal. (4 puntos)
4. Paree los términos con su definición (10 puntos)
_____ 1. Un agente que mata a los organismos.  a. Estático  
_____ 2. Droga antimicrobial sintetizada con procedimientos
químicos en el laboratorio.
b. Esterilización
_____ 3. El proceso que destruye todos los organismos vivos
y virus.
c. cidal
_____ 4. Un agente que inhibe el crecimiento de los
organismos lo suficiente para que las defensas del
cuerpo lo eliminen.
d. Antibiótico  
_____ 5. Producto metabólico de un microorganismo que
inhibe o mata otro microorganismo.
e. Agente con un
espectro estrecho
_____ 6. La eliminación de microorganismos, pero no
necesariamente endosporas, de objetos inanimados
o superficies.  
f. Desinfección  
_____ 7. Un agente químico que se usa para inhibir o matar
el patógeno sin afectar el huésped.
g. antiséptico  
_____ 8. Un agente que mata o inhibe el crecimiento de
microbios, pero es seguro para el uso en tejidos
h. Toxicidad
_____ 9. Un agente químico que generalmente trabaja en
contra de gram positivas, gram negativas o solo
algunas bacterias.
i. Agente con un
espectro amplio
_____ 10. Un agente químico que generalmente es efectivo en
contra de una gran variedad de bacterias gram
positiva y gram negativa.
j. Droga sintética

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