Darlene owns a pharmaceutical company that is trying to create a new vaccine. During the testing phase, the data showed that the vaccine was able to prevent 99 percent of the patients from contracting the disease. However, many patients complained of headaches and a few patients later developed brain cancer. Even though it did help prevent the disease, why might the FDA hesitate to approve this vaccine for general use? A. Only 99 percent of patients were prevented from contracting the disease. B. It is a new vaccine. C. Pharmaceutical companies are not allowed to develop vaccines. D. Many patients had side effects and some developed brain cancer.

Which of these is the muscular tube that leads from the mouth to the stomach? a.epiglottisb.uvulac.soft palated.esophagus

American college students invented football by combining what two sports?

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.