Assume you have conducted a dna sequencing reaction using the chain-termination (sanger) method. you performed all the steps correctly and electrophoresced the resulting dna fragments correctly, but when you looked at the sequencing gel, many of the bands were duplicated (in terms of length) in other lanes.
what might have happned?

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.

What would happen if the krill were removed from the food web

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above