Chemotaxis is defined as a response to a chemical gradient of attractant or repellent molecules in the bacterium's environment. if the environment contained a gradient of attractants, which bacterium would be most likely to have a net movement toward the signal? (choose the motility deep test result as your indicators.) select one: a. the motility deep has a single green line that corresponds to where you had stabbed the needle. b. the motility deep is colorless. c. the motility deep is entirely red. d. the motility deep has a single red line that corresponds to where you had stabbed the needle.

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 the similarities and differences between bacteria and eukaryote?

Which type of landforms forms at the plate boundary as a result of divergent stress