The grizzly bear feeds on salmon that migrate upriver from the ocean during the spawning season. these fish are rich in carbon, nitrogen, and sulfur. the bears leave half-eaten fish and nutrient-rich feces on the forest floor. due to its role in this ecosystem, the grizzly bear would be classified as 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.

This is a type pf behavior that animals are born with and them to survive

Witch type of microscope is used to view very small cell components like proteins and dna?