Biology, 13.07.2019 15:30 cesarcastellan9
Osmosis and diffusion are different because: a. only diffusion occurs across a cell membrane. b. diffusion may lead to lysis or crenation. c. diffusion is active transport, whereas osmosis is passive transport. d. osmosis only occurs across a semi-permeable membrane.
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 20:20
Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth
Answers: 2
Biology, 22.06.2019 09:00
Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.
Answers: 3
Biology, 22.06.2019 15:30
Will ! a cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. assume the cell’s membrane is permeable to water, but not permeable to the sucrose. where will the water diffuse? explain.
Answers: 1
Osmosis and diffusion are different because: a. only diffusion occurs across a cell membrane. b. di...
Social Studies, 04.12.2020 17:00
Computers and Technology, 04.12.2020 17:00
Social Studies, 04.12.2020 17:00
Mathematics, 04.12.2020 17:00
Social Studies, 04.12.2020 17:00
Mathematics, 04.12.2020 17:00