You are digging in a swampy area, looking for new bacteria. you dig deep into the mud where little oxygen penetrates and take a sample back to the lab for culturing. you find one species that grows in the absence of oxygen and it also grows and uses oxygen when it is available. this bacterium is a

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.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

How far away is the nearest black hole from earth?