Police Officer Ivan is the first responder on a crime scene. He arrives to find himself in an odd room—empty of everything except the body of a man who has been decapitated; his head is nowhere to be found. You can clearly tell the no one else is around, and the body looks like it has been here for days. What step should Ivan take first to secure the scene? A. Ivan should call an ambulance to get emergency medical aid.

B. Ivan should cordon off the area so that no one else can enter the premises.

C. Ivan should search the body for identification so you can contact the victim’s family.

D. Ivan should look for any cameras, etc. that might have caught footage of any incidents in room.

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.

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?