A call comes into the station at 0400 hours. The dispatcher sends your engine crew to a shelter for homeless people for an "ill person". When you enter the shelter, an attendant says, "Hank just came in last night. He lost his job and then his room. He tells us that he can't shake this cough, that it's been troubling him for some time. He's awfully thin, which is to be expected from living on the streets. I found him in the bathroom, on the floor, coughing up blood. I got him back to bed, but I'm worried about him. He's only 21. Could you take a look at him?"

What steps should you take before examining this patient? Why? You believe that you were exposed to this patient's body fluids during the physical exam. After you transfer care of the patient to the EMS ambulance crew, what steps should you take?

Poliovirus is an rna virus of the picornavirus group, which uses its rna as mrna. at its 5' end, the rna genome has a viral protein (vpg) instead of a cap. this is followed by anontranslated leader sequence, and then a single long protein-coding region (~7000 nucleotides), followed by a poly-a tail. observations were made that used radioactive amino acid analogues. short period use of the radioactive amino acids result in labeling of only very long proteins, while longer periods of labeling result in several different short polypeptides. what conclusion is most consistent with the results of the radioactive labeling experiment? a) host cell ribosomes only translate the viral code into short polypeptides.b) the rna is only translated into a single long polypeptide, which is then cleaved into shorter ones.c) the rna is translated into short polypeptides, which are subsequently assembled into large ones.d) the large radioactive polypeptides are coded by the host, whereas the short ones are coded for by the virus.