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Symptoms of protozoan and helminthic diseases are due to
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
Bacteria such as E. coli and Salmonella produce invasins that bind host cells, thus causing the cells to
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
Most pathogens that gain access through the skin
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
The most frequently used portal of entry for pathogens is the
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
The ability of some microbes, such as Trypanosoma or Giardia to alter their surface molecules and evade destruction by the host's antibodies is called
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
Botulism is caused by ingestion of a proteinaceous exotoxin; therefore, it can easily be prevented by
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
Polio is transmitted by ingestion of water contaminated with feces containing polio virus. What portal of entry does polio virus use?
All of these
antigenic variation.
enter through hair follicles and sweat glands.
engulf the bacteria.
mucous membranes of the respiratory tract.
boiling food prior to consumption.
mucous membranes only
give new gene sequences to the host bacteria.
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