A viral genome is composed of a double stranded DNA molecule containing 14% T (thymine). Based on this information, what would be the percentage of cytosine?

You have just isolated the covid-19 virus.  Analysis of its genome reveals that it is composed of a single stranded RNA molecule containing 24% adenine.  Based on this information, what would you predict the % cytosine to be? (a) 24%   (b) 26%   (c) 48%  (d) 52%   (e ) Cannot be determined from the information given

RNA was extracted from certain virus and found to contain 35% cytosine. With this information, is it possible to predict what percentage of the bases in virus are adenine? If so, what percentage? If not, why not?

Draw the chemical structure of a molecule of adenosine triphosphate. Include labels to indicate the names of its different components.

A cell is infected with an HIV mutant that results in very little virus being released into the medium that is used to grow the cultured cells. Upon electron microscopy it is noted that the membrane of the infected cell is idenitcal in appearance to a cell that has not been infected. In addition there is relatively little viral RNA in the cells and relatively few proviruses in the cellular genome when compared to a non-mutant HIV infection. Which of the following proteins is most likely mutated? Multiple Choice gag reverse transcriptase vif vpu

A scientist isolates the DNA genome from a virus. She attempts to carry out a melting analysis but finds only 10% hypochromicity. (a) Suggest an explanation for the low value. (b) Why do you think she finds this much?

Human cells contain a protein that binds to the 5′ triphosphate groups of RNA. Explain why this protein would be part of the defense against viral infection.

To what extent do nutrients from terrestrialecosystems affect organisms in the lake?

Briefly describe how the Nucleocapsid protein of rabies virus promotes the switch from transcription to viral genomic replication.