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Biology, 21.06.2019 17:10
Salmonella typhimurium is a food-borne bacterial pathogen that can cause severe gastrointestinal disease. salmonella is often phagocytosed by macrophages that normally destroy bacterial pathogens, but this bacterium is somehow able to prevent the complete maturation of phagolysosomes. salmonella is able to tolerate the low ph of phagolysosomes, and in fact responds to the drop in ph by secreting toxins that interfere with other cellular responses. which of the following differences would you expect to contribute to the survival of a bacterium within an salmonella-containing phagosome, compared to a healthy phagolysosome? decreased activity of acid hydrolases increased activity of acid hydrolases decreased import of h+ ions increased import of h+ ions my guess is decreased activity of acid hydrolases but i'm not sure.
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Biology, 22.06.2019 01:10
Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells
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Biology, 22.06.2019 05:00
According to this food web which of the following would be considered primary consumers
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Biology, 22.06.2019 10:30
19. a cell is viewed under a microscope and is found to have two nuclear envelopes and spindles that appear to be breaking apart. which phase of mitosis is the cell most likely in? a. metaphase b. prophase c. telophase d. anaphase
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History, 16.09.2019 09:30
History, 16.09.2019 09:30
Mathematics, 16.09.2019 09:30
Mathematics, 16.09.2019 09:30
History, 16.09.2019 09:30
Mathematics, 16.09.2019 09:30
Mathematics, 16.09.2019 09:30
History, 16.09.2019 09:30
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English, 16.09.2019 09:30
English, 16.09.2019 09:30