You discover a new virus. It has a single stranded + sense RNA genome. It uses a special enzyme to convert the RNA genome into double stranded DNA. Transcription of mRNA is carried out from the DS DNA template. Which group in the Baltimore classification system would you place this virus into?

Group VI viruses (retroviruses)

Explanation:

Baltimore classified the viruses in different groups on the basis of their mode of replication and the type of genetic material they possess.

In the given question, the species which contains an ssRNA molecule but use DNA as an intermediate molecule to replicate is known as a retrovirus.

The retrovirus uses a special enzyme called reverse transcriptase which synthesizes the DNA from an RNA template. The DNA formed gets integrated into the host genome and gets replicated.

Thus, Group VI viruses are the correct answer.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.