Rickie is playing with two soccer balls. he kicks the red ball and it hits the blue ball that was a rest. after they hit, the blue ball rolls away from him and the red ball rolls back toward him. why does the red ball roll back toward rickie? question 9 options: forces act in pairs, so when the red ball pushes the blue ball forward, the the blue ball exerts an equal and opposite force on the red ball. the wind could also add a force to the ball and create different directions for them to roll. forces act in pairs, so when the blue ball pushes the red ball forward, the red ball exerts an unequal and opposite force on the blue ball. it is random that the red ball rolls back to rickie and blue ball rolls away.

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 compliment dna strand to the following sequence: ttgactaggcta

What is gene expression control that occurs after the generation of rna