Ras, a small g protein located at the plasma membrane, is often mutated in different types of cancer. ras normally signals to a cell that it should divide. cancer cells divide uncontrollably. which of the following changes to ras would you expect to see in a cancer cell that has mutated ras present?

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.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

How do you date a sample of rock that you suspect as being one of the earliest on earth