Some people might see my cat George soaking up a sunny spot in my living room or sleeping for 20 hours each day and think, "What a lazy cat!" But "lazy" is the wrong word for George. George the Cat is calm, and he is wise. The other night, for example, there was a terrible storm with crashing thunder and bright flashes of lightning that lasted two hours. Another cat might have darted around the room, frantic and hyper, thumping into walls and diving off countertops. But George just woke up from his perch and quietly analyzed the situation, watching me closely for cues to how to react. He seemed to be asking me, "Should I be very frightened?" I just kept cooking spaghetti and singing along to the radio. So George didn't waste any time; he went right back to sleep. Which words from the passage have a positive connotation?

A
"frantic" and "hyper"

B
"calm" and "wise"

C
"crashing" and "thumping"

D
"sleeping" and "darted"

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.