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1. List the general characteristics of viruses.
2. What types of cells can be host cells for viruses
3. What characteristics are sed to classify viruses into familes.
4. What does the core of every virus particle always contain
Suppose that you start with a lysogenic strain of E. coli. In this strain, a mutation arises that results in the intracellular repressor level becoming twice as high as it normally would be.
Imagine a population in which an autosomal recessive disease mutation has an allele frequency of 0.04 (q = 0.04).
the reversion precisely reversed the original change that produced the typ- mutant allele.
Which plant family is most important for human nutrition.
Summarize the environmental effects of increased atmospheric and oceanic carbon dioxide concentrations.
Organisms like jellyfish, sponges and flatworms do not have a circulatory system or lungs. What adaptations do these organisms have for oxygen delivery?
What makes RNAi different from other forms of mutagenesis? What are some developmental defects caused by RNAi?
The cell walls if bacteria, fungi and plant cells and an extracellular matrix of animal cells are all external to the plasma membrane. Which is the characteristic of all these extracellular structures.
An oligomeric protein has a molecular weight of 153000. A 960 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene(sanger's reagent) until the reaction was complete.
If you have 100 mL of a 0.1 M tris buffer at pH 8.3 and you add 3.0 mL of 1 M HCl, what will be the new pH? The pKa of tris buffer is 8.3.
Two extensively inbred strains of summer squash - designated "crookneck" and "scallop" - are crossed. The length of fruit in the crookneck averages 40 cm and that in the scallop averages 7 cm.
An 18-year-old male with a history of asthma presents to the emergency room complaining of shortness of breath and wheezing. What is the pathogenesis to asthma? What is the drug of choice?
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