Drug holidays, from an evolutionary perspective, are not intelligent. Especially in retroviruses like HIV, the replication of active strains restarts very quickly after the drug has been suspended. Even these short periods allow for the higher virus load to have a higher chance of mutations that might lead to new resistancies that then could not be targeted by the medication.​

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.

Agene in a type of bacteria when the ses bacteria reproduce asexually this mutation can only be inherited by

What is the average speed of a car that traveled 300.0 miles in 5.5 hours