The presence of long double-stranded RNA (> 30 bp)
A. indicates infection by an RNA virus other than a retrovirus.
B. indicates infection by a virus.
C. indicates exposure to mutagens.
D. induces synthesis of interferon.
E. indicates infection by an RNA virus other than a retrovirus AND induces synthesis of interferon.
E
You might also like to view...
Cells change the composition of their plasma membranes as a response to changing environments. In general, colder temperatures reduce the fluidity of the membrane, so cells will produce different molecules to bring the fluidity back to normal
How would the cell change the membrane in response to colder temperatures? A. increase the amount of saturated triacylglycerols B. increase the amount of unsaturated fatty acids C. increase the length of the fatty acid side chains in the phospholipids
Which most accurately describes the expression "recombinant DNA"?
a. DNA molecule cloned from a given organism b. DNA molecule that contains genetic information from more than one organism c. DNA molecule that is moved from one tube to another in a laboratory d. DNA molecule isolated from a specific organism e. DNA molecule that has been used in a laboratory for experimental purposes
All of the following are true of biofuels EXCEPT
A) there is concern that using food products as a fuel source will reduce the global food supply and increase food prices. B) demand for biofuels has placed demands on rain-forest lands. C) these are fuels such as methane produced from renewable biological resources such as soybeans and corn. D) the goal of their use is to reduce harmful carbon dioxide emissions. E) biofuels are the only solution to our growing need for fuels in the future.
The rough ER and the smooth ER are distinguished from each other by
A) the presence or absence of membrane-bound ribosomes. B) the presence or absence of membrane-bound ribosomes and the synthesis of lipids by the rough ER and the synthesis of proteins by the smooth ER. C) synthesis of lipids by the rough ER and synthesis of proteins by the smooth ER. D) the presence or absence of both DNA and membrane-bound ribosomes. E) the presence of absence of DNA.