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.
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Biology, 21.06.2019 18:30
Which sentence best expresses the differing opinions of these two book reviews?
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Biology, 22.06.2019 05:40
Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.
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Biology, 22.06.2019 11:30
Can someone pretty me with this ? it’s urgent.compare the three theories of emotion. here are the three theories of emotion. cannon-bard theory of emotion: the belief that both psychological arousal and emotional experience are produced stimultaneously ( at the same time) by the same nerve stimulus. james-lange theory of emotion: the belief that emotional experience is a reaction to bodily events occurring as a result of an external situation. ( “ i feel sad because i am crying.) schachter-singer theory of emotion: the belief that emotions are jointly determined by a nonspecific kind of psychological (bodily function) arousal and its interpretation, based on environmental ( natural surroundings) cues. which of these theories makes most sense to you? why. your response should be written using proper english spelling and grammar. and it needs to be 10 complete sentences.
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