(PLESE HELP) A 100-m long ski lift carries skiers from a station at the foot of a slope to a second station 50 m above the base. What is the mechanical advantage of the lift? 500

2

0.5

40

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.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants