Freezing is an effective means of destroying bacteria. (True or false?)

Freezing is an effective means of destroying bacteria.
 
  Indicate whether this statement is true or false.

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There are five stages of growth in an open system of culture.
 
  Indicate whether this statement is true or false.

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Secondary metabolites may be antibiotics.
 
  Indicate whether this statement is true or false.

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A single bacterial cell may multiply to form a visible colony.
 
  Indicate whether this statement is true or false.

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In microbiology, growth usually refers to an increase in size of the bacteria.
 
  Indicate whether this statement is true or false.