Biology, 28.01.2020 20:03 angeleyes42
What happens when the body cannot differentiate between pathogens and body cells? a. the immune system will target the body’s own cells. b. the organism will develop allergies. c. the digestive system will absorb the pathogens. d. the excretory system will remove the pathogens.
Answers: 1
Biology, 22.06.2019 09:00, nireegnu
The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer
Answers: 2
Biology, 22.06.2019 23:00, alina1120
Nitrogen-14 and nitrogen-15 are isotopes of the same element. how do these two isotopes differ? a. they have different numbers of nuclei. b. they have different numbers of protons. c. they have different numbers of neutrons. d. they have different numbers of electrons.
Answers: 2
What happens when the body cannot differentiate between pathogens and body cells? a. the immune sys...
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