Question

question 4 (1 point) saved
physical methods of microbial control include heat, cold, radiation, drying, and filtration
a) true
b) false
question 5 (1 point) saved

1. sterilization by filtration removes microbes from heat - sensitive liquids and circulating air. the type of microbe removed depends on the

a) ph of the liquid
b) temperature of the liquid
c) temperature of the air
d) pore size of the filter.

Explanation:

Question 4

Physical methods of microbial control indeed involve heat (e.g., pasteurization), cold (retards microbial growth), radiation (e.g., UV radiation), drying (desiccation), and filtration (removes microbes from liquids or air).

Filtration sterilization works by physically separating microbes from heat - sensitive liquids or air. The key factor in determining which microbes are removed is the pore size of the filter. Smaller pore sizes can remove smaller microbes. pH of the liquid, temperature of the liquid or air do not directly determine which microbes are removed in the context of filtration sterilization based on the principle of size - based separation.

Answer:

a) True

Question 5