All theories are hypotheses, but not all hypotheses are theories. francis wants to know if a specific hypothesis he is researching
is a theory. which describes how francis would know the hypothesis is a theory?
he could restate the hypothesis as a fact and no longer an explanation.
he could determine whether the hypothesis is based on repeated experiments.
he could perform the experiment and adjust data to match the desired results.
he could design and perform a new controlled experiment to test the hypothesis.

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 is thought to have caused the mass extinction at the end of the cretaceous period?

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called