Biology, 22.01.2020 22:31 connormaxie
According to the law of conservation of matter, matter is never created or destroyed. yet in a food pyramid the amount of
biomass decreases as we move up through the pyramid, from producers to top level consumers. why?
Answers: 1
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, 21.06.2019 19:00
Which element provides strength to the exoskeleton of clams and oysters
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Biology, 21.06.2019 23:30
You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled
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Biology, 22.06.2019 04:00
Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms
Answers: 1
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