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In which of the following animals would you expect to find a specialized organ that holds cellulose-degrading bacteria and fungi?
You are growing Bacillus subtilis in a bioreactor and notice that the growth rate has slowed and the pH has decreased. You suspect the bacteria are
Assume that you bought a semisoft cheese, such as blue cheese, and put it into your refrigerator. Three weeks later, you slice the cheese and notice the center is now liquid because
Fungal enzymes have digested the curd.
The following steps are required for making cheese. Which is the second step?
Inoculate with lactic acid bacteria
Koch's postulates don't apply to all diseases because
Not all diseases are caused by microorganisms.
The most frequently used portal of entry for pathogens is the
Mucous membranes of the respiratory tract.
Which of the following diseases is NOT usually contracted by the respiratory route?
Which of the following best defines innate immunity?
The body's defenses against any kind of pathogen
Which of the following is NOT a physical factor protecting the skin and mucous membranes from infection?
The function of the "ciliary escalator" is to
Remove microorganisms from the lower respiratory tract.
What type of immunity results from transfer of antibodies from one individual to a susceptible individual by means of injection?
Artificially acquired passive immunity
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