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Question 1: Explain why only certain cell types are permissive for transcription of HIV proviral DNA. What cellular factors are involved and why?
Question 2: What are the selective advantages and disadvantages for DNA viruses in relying on host cell apparatus for production of mRNAs and replication of their genomes? Give examples of host cell apparatus required.
Question 3: DNA viruses generally possess a precisely ordered and temporal sequence of transcription of viral genes. Why is this control necessary and beneficial to the virus? By what molecular mechanisms do viral proteins help mediate this control? Give specific examples.
Question 4: DNA viruses are heavily reliant on the host for providing factors required for replication. Replication of eukaryotic DNA is a very precisely regulated process and normally only occurs prior to mitosis. Therefore, viruses have evolved a number of mechanisms for enabling viral DNA synthesis when the host cell is in the Go state. Describe elements of one such mechanism and why they are required for viral replication. What are the advantages for the virus?
Question 5: Many DNA viruses possess latent infectious cycles. What are the characteristics of a latent infection and how does a latent virus alter both its production of RNA and replication to maintain the latent infection?
Question 6: What are the complications/obstacles for a single stranded DNA virus to replicate its genome. Describe mechanisms a specific virus uses to overcome these obstacles.
White tigers are indicated with unshaded symbols. (As you can see, there was considerable inbreeding in this lineage. For instance, the white tiger Mohan was mated with his daughter). In answering the questions, assume that hite.
Clostridium and Streptococcus are both catalase-negative. Streptococcus grows by fermentation. Why is Clostridium killed by oxygen, whereas Streptococcus is not.
Describe the major points of the Sternberg, Spearman, and Gardner models of intelligence. Discuss specific similarities and differences from one model to another. Discuss which model appears to be the most comprehensive model of intellectual function..
Why in the world plants evolved such beautiful colours and shapes and create such wonderful scents. What do you tell her.
If narrow-sense heritability in the rabbit population is 0.7, what is an expected body weight among offspring of selected rabbits. What was the amount of cash paid on accounts payable for the period of the year ended December 31.
What is the difference between heterosporous and homosporous plants? What two types of spores do heterosporous plants produce? Spores that will develop into a female gametophyte are.
The resting potential of a neuron is approximately -60mV. Neurons maintain this electric potential by maintaining a balance of ions inside and outside the membrane. Which of the following is the most significant factor in determining this balance.
Describe about how various kinds of systematic variations in the Earth's orbit.Describe the results and give the genotype of the P.
Explain plant life, animal life, and geology of the ecosystem in Utah. What populations and communities are present? How dependant is your community on this ecosystem? What are the preventive factors of the ecosystem.
Discuss these two laws of Thermodynamics and how they relate to the Law of Conservation of Matter. Which of the next may be the path of a protein from the site where its polypeptides are made to its export.
The Xerox machine becomes obsolete after five years. Compute the net present value for both scenarios and the profitability index for the buying scenario. What is the advice to the young entrepreneur? Suppose that funds have to be borrowed at an inte..
What is the rate of coagulation of naturally occurring colloids (under various pH and I scenarios)? How may the size spectrum of agglomerates change over time? How quickly do colloidal aggregates settle.
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