Bruce wants to get ketchup out of a bottle. in order to do this, he brings the bottle forward quickly and then suddenly stops it. why is this likely to get the ketchup out of the bottle, according to newton's first law? a. the ketchup will tend to remain at rest, and the bottle will move backwards. b. the bottle and ketchup tend to remain at rest, and if bruce moves them it causes ketchup to come out. c. the bottle tends to remain in motion, and when bruce stops it the force transfers through the bottle to the ketchup. d. the ketchup will tend to remain in motion after the bottle stops, bringing the ketchup closer to the mouth of the bottle.

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.

Which event would lead to primary succession of a forest?

How is the carbon cycle related to global warming ?