Answered

Which of these is a sequence of defense for fighting off a pathogen?
O tears
1
fever
antibodies
○ fever
fever
→ T-cells → saliva
1
1
B-cells → inflammation
1
ear wax -
O inflammation
1
tears
1
antigens



Answer :

GinnyAnswer

Final answer:

Defense against pathogens involves mechanical, chemical, and biological barriers.


Explanation:

Defense against pathogens involves a sequence of mechanisms.

  1. Mechanical barriers like the skin, mucous membranes, tears, and urine physically block pathogens.
  2. Chemical barriers include enzymes in sweat, saliva, and semen that kill pathogens on body surfaces.
  3. Biological barriers are harmless bacteria that prevent pathogenic bacteria colonization.

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