Biology, 27.08.2021 02:50 kingindoraptor
A. Archaea evolved from endosymbiosis with a proteobacterium. B. Mitochondria are descended from ancestral endosymbiotic proteobacteria. C. Fungi were once photosynthetic but lost their chloroplasts. D. Modern cyanobacteria descended from chloroplasts. E. Having mitochondria is a prerequisite for acquiring chloroplasts.
Answers: 2
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.
Answers: 1
Biology, 21.06.2019 17:30
If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?
Answers: 3
Biology, 22.06.2019 03:40
How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.
Answers: 3
A. Archaea evolved from endosymbiosis with a proteobacterium. B. Mitochondria are descended from anc...
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