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Question 1-As you have learned viruses must be able to package their genomes within a small capsid. The picture below is an atomic detail model of an icosohedral (+) strand RNA virus with a diameter of 30 nm. Most models of viruses show the genome as small “squiggly” lines, but this model demonstrates how the genome is tightly packed within the capsid. Assuming that the virus capsid is spherical, work with your classmates to calculate what is the maximum genome size (in nucleotides) that can fit into the capsid. How long in millimeters would this largest possible RNA genome be?
Question 2-The largest known virus was reported this past summer. It is so large it can be viewed with a light microscope and has a genome size of 2.45 mega bases, which is larger than many bacteria. One of the pictures below is of this new virus inside a host amoeba, while the other is a picture of a similar sized intracellular bacterium infecting a host eukaryotic cell. Given what you learned last week on the different methods for assaying/characterizing viruses as well as the differences between viruses and cells; propose experiments you could perform to determine whether the pictured entities are viruses or bacteria.
List and describe at least three cellular features of bacteria that could be targeted to inhibit or kill bacterial pathogen. Which is a significant flaw in this experimental set-up.
What is most likely genotype of the father? Mother? If the seventh child had blue eyes what could you conclude about parents genotyoes. What possible dissimilarity between these forms would give chemists a clue that open-chain form was not present.
Which will you expect to increase significantly from M to G1. What does this tell you about how the cellular information for eye colour is pass on? Describe in detail.
How several bacteria were on the soap? How did they get there. Unlike squamous cells, cuboidal and columnar cells have large, open cytoplasms. Which functions of epithelial tissue are supported by having such big cells.
A major difficulty in investigating the properties of pancreatic serine proteases is that these enzymes, being proteins, are self digesting. The problem is less severe for solutions of chymotrypsinthan than for solutions of elastase or trypsin.giv..
An organism has a diploid chromosome number of 12. How many chromatids will be visible during metaphase of mitosis? How many chromosomes will be visible at the end of anaphase in mitosis? For the similar organism, how many chromosomes will be present..
Roger has arthritis and has been taking prednisone (a glucocorticold) at prescribed levels for two months. He isn't feeling well and complains of repeated colds. He is puffy (edematous). Describe the reason for these symptoms.
At 4.00 rm L, an expandable vessel contains 0.864 rm mol of oxygen gas. How numerous liters of oxygen gas should be added at constant temperature and pressure if you require a total of 1.96 mol of oxygen gas in the vessel.
Compare and difference wave summation with recruitme nt. How are they similar? Describe how wave summation and recruitment are achieved in the body.
Describe why gram-negative bacteria are more resistant to biocides than gram-positive bacteria. Be exact and descriptive in the response. A description of the differences between gram-negative and gram-positive bacteria must be included, along with a..
State the rate of growth of population of bacteria? State the initial population at time t = 0 hours?
The membrane vesicles are next washed, the membranes solubilized and the proteins denatured and analyzed by SDS gel electrophoresis and Western blotting using polyclonal antibodies against glycophorin A, an erythrocyte plasma membrane protein.
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