Transposition (insertion of a transposon into a DNA sequence) results in the formation of base substitution mutations in a cell's DNA
Indicate whether the statement is true or false
FALSE
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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.
True or false: Oils are triacylglycerols with a high level of unsaturated fatty acids
A. true B. false
One way in which organisms may exhibit resistance to a drug is the ability to pump the drug out of the cell immediately after it has entered.
Answer the following statement true (T) or false (F)
A solution with a pH of 5 has how many more protons in it than a solution with a pH of 7?
A) 5 times B) 10 times C) 100 times D) 1000 times