52. How does the immune system differentiate a pathogen from body cells?
A. Pathogens ha...
Biology, 22.05.2020 16:59, rubianny03
52. How does the immune system differentiate a pathogen from body cells?
A. Pathogens have especially weak cell membranes that the immune system can break.
B. Pathogens and body cells have different surface proteins, or antigens, that the immune system recognizes.
C. Body cells release a variety of chemicals that deactivate the immune system.
D. Pathogens are significantly smaller and reproduce more rapidly than body cells.
Answers: 3
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Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.
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The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.
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