Using the drawing of mRNA below, choose the letter that best fits the description. This region contains codons for the amino acid sequence of the translated protein. ____
What will be an ideal response?
c
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Poliovirus is an RNA virus of the picornavirus group, which uses its RNA as mRNA. At its end, the RNA genome has a viral protein (VPg) instead of a cap
This is followed by a nontranslated 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.
Which occupation would hold highest risk of glanders?
a. Rice farmer b. Medical doctor c. Veterinarian d. Sewer worker
If a female parent is a carrier, due to the presence of one copy of the recessive Hemophilia A allele being carried on the X chromosome, what are the odds that she could have an affected male child?
a. 0 b. 25% c. 50% d. 75% e. 100%
Which of the following is a correct difference
between the pectoral girdle and the pelvic girdle?
a. the pectoral girdle has more bones b. the pectoral girdle includes the patella and the pelvic girdle includes the radius c. the bones of the pelvic girdle are fused; the bones of the pectoral girdle are not d. the bones of the pelvic girdle are part of the upper body; the bones of the pectoral girdle are a part of the lower body e. more than one of these is a correct difference between the pectoral and the pelvic girdle