What is the major difference between positive and negative feedback?
APositive feedback is controlled by the hypothalamus; negative feedback is controlled by the endocrine system incorrect answer
BPositive feedback causes bodily processes to continue; negative feedback causes bodily processes to start or stop incorrect answer
CPositive feedback shuts down bodily systems; negative feedback starts up of bodily systems incorrect answer
DPositive feedback occurs when you get too hot; negative feedback occurs when you get too cold incorrect answer

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.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?