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please answer it in a clear way:

- What are the major differences between viral, bacterial, and eukaryotic genomes? What demographic differences between species might account for some of the differences we observe at the level of the whole genome?

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Trinidad Tremblay
Trinidad TremblayLv2
7 Aug 2019

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Related questions

1. Explain the fundamental differences between up-regulation anddown-regulation of gene expression.

2. What is basal level gene expression, and why does ithappen?

3. A number of different mutations in the HBB gene can causethallassemia, a disease characterized by various levels of anemia.Many of these mutations occur within introns or in upstreamnoncoding sequences. Explain why mutations in these regions oftenlead to severe diseases, although they may not directly alter thecoding regions of the gene.

4. What might be two means an eukaryotic cell might use to stopthe movement of simple transposons in its genome?

2.)

a.) Are viruses that infect Archaea different from other bacterial viruses?

Yes, they do not have protein coats because of the extreme conditions where they live.
No, they consist of nucleic acid and protein just like other bacterial viruses.
Yes, the structure of archaeal viruses is always completely different from other bacterial viruses.

Yes, they have only DNA genomes.

b.) Of the following examples, which is not a common part of many viral life cycles?

The pox virus genome is replicated by DNA polymerase.
Adenoviruses attach to the cell and the nucleocapsid is taken up by the cell.
Pox viruses replicate in the cytoplasm of the cell.

Once an adenovirus virion is inside a cell, host RNA polymerases transcribe early genes

c.) Some viruses are associated with cancer. There are a variety of ways in which viruses may affect a cell in a way that may lead to cancer. Based on your knowledge of the life cycles of viruses and of molecular genetics, what is one way that this might happen?

Viral genetic material inserts into a host genome close to the termination sequence, far downstream of the promoter, and causes a silent mutation.
Viral genetic material inserts into a host genome in a repetitive noncoding region.
Viral genetic material inserts into a host genome, placing a promoter in a new location and turning on a gene that had previously been turned off.
Viral genetic material inserts into a host genome and causes a mutation in a promoter, turning off a gene that had previously been turned on.

d.) Which statement describes the difference between the normal neuron protein PrPC and the pathogenic version PrPSc?

PrPC is just a protein and the PrPSc is a protein with nucleic acid inside.
The PrPC protein contains more beta sheets while the PrPSc protein contains more alpha helices.
The three-dimensional conformation is identical, but the amino acid sequence is different.
The amino acid sequence is identical, but the three-dimensional conformation is different.

The human genome is about 770 MB, the C. elegans genome is about100 MB, the yeast S. cerevisiae is about 12 MB. Different othergenomes have been sequenced: how many GB of genomic DNA we havenow?

Let say we would like to make a Noah hard-disk ark: how muchspace would it take to represent the genomes of all known specieson earth? There is a way to provide an estimate?

I'm also interested in the total biodiversity: for instance, iftwo species each have 1 GB genomes and have half of their DNA incommon this would count as 1.5 GB.

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