Identify three GW IBS faculty trainers and describe your interest in their research programs.
Dr. Jiyoung Lee:
https://apps.smhs.gwu.edu/smhs/facultydirectory/profile.cfm?empName=Jiyoung%20Lee&FacID=2058692984
Dr. Catherine Bollard
https://apps.smhs.gwu.edu/smhs/facultydirectory/profile.cfm?empName=Catherine%20Bollard&FacID=2057582905&show=1
Dr. Katherine Chiappinelli
https://apps.smhs.gwu.edu/smhs/facultydirectory/profile.cfm?empName=Katherine%20Chiappinelli&FacID=2040325114
Looking at the onion root slide, locate 50 cells that appeared to be actively dividing when the slide was made. Notice how these cells are arranged in columns. This will allow you to easily keep track of them while you are doing this activity.
For each of the 50 cells you chose, identify which stage of mitosis the cell is in, and keep track using the “tally marks” section of the table below.
Once you have tallied 50 cells, count how many were present for each phase of mitosis and write that number in the “count” section of the table.
Which phase had the most cells? __________________________
Which phase had the least cells? ________________________
Calculate the percentage of cells found in each phase. This can be done by dividing the number of cells in the phase by 50, which is the total number of cells in the count, and then multiply your answer by 100. Enter this number in the “percentage” section of the table.
The percentage of cells found in each phase is a measure of how long each phase lasts. For example, if 25 percent of the cells are in prophase, then prophase takes 25 percent of the total time it takes for a cell to undergo mitosis. Mitosis in onion cells takes about 80 minutes.
Calculate the actual time for each phase using this information and the percentage you have just determined. Use the following equation to find the duration of each phase of mitosis in onion cells. Enter the time (in minutes) of each phase under the “Time (in minutes)” column of the table.
Identification of Unknown Bacteria
Analyze and give the names of the two bacteria in the “unknown 22” file according to the document “unknown 22”.
Analyze the results and describe the changes in each dish. As in the example document “IDENTIFICATION OF UNKNOWN BACTERIA.”
Your two unknowns are within the following list: remember you have a Gram-positive and a Gram-negative bacteria.
Micrococcus luteus,
Pseudomonas aeruginosa,
Proteus vulgaris,
E. coli,
Bacillus subtilis
Enterobacter aerogenes,
Serratia marcescens,
Staphylococcus aureus,
Staphylococcus epidermidis,
Enterococcus faecalis
Your report needs four sections plus the literature cited. These sections can be separate with headings or part of an overall paper. There is no minimum length, but you probably need at least one full page (and two is better).
The four sections are:
1. Basic overview of the entire issue – what is it?
2. History of the problem
3. What is being done about the problem or what do people propose should be done?
4. Your thoughts on the issue – synthesize all of the above sections and try to draw some conclusions of your own
You will also need a literature cited.
Grades will be based on:
1. having all four sections completed appropriately and thoroughly
2. submitting an electronic version
3. basic grammar and spelling
4. proper citations in the text and in the literature cited (CSE scientific style)
5. quality of citations. You need a minimum of four citations and at least two should be solidly reliable and objective.
My topic is over pollution
What is the correlation between HDI and mortality rate due to pneumonia (measured in number of deaths per 100,000 of population), in countries with a HDI of above 0.75?
Proxima Centauri
Prompt:
The closest star to our own, approximately 4.2 light-years away or 25 trillion miles, is the red-dwarf, Proxima Centauri. This low-mass star is about 12% the mass of our Sun, however, a planet has been observed rotating around this red-dwarf star called Proxima c. This exoplanet is approximately 1.3 times the size of earth and appears to have a rocky terrain. Because of its rotation, Proxima c would have approximately 22 Earth days between sunrises and the surface temperature would be approximately -40C. Evidence of both atmospheric and liquid water on the surface has been observed. Because of the closeness of this planet to the Proxima Centauri, the planet is flooded with 400x more radiation than Earth and a solar wind pressure 2000x that experienced on Earth. Due to these factors, the inhabitants of this planet would most likely live underground and would only venture above ground for resources. They would be bipedal humanoids, resembling humans in their anatomy and physiology. However, considering the differences between Proxima c and Earth, there will be adaptations that would ensure their survival on Proxima c.
Analysis:
Using this information, you should describe and justify one adaptation to the nervous system that this organism would have to inhabit Proxima c. This analysis should include the following:
Description of the physiology of the human nervous system (using your textbook as a primary information source).
An explanation of how the environment of Proxima c may affect the functioning of the human nervous system.
Propose an adaptation to the human nervous system the Proxima c humanoid would have to compensate for the environment.
The adaptation can be based on changes in a human organ to make it work more efficiently on Proxima c or can be an organ that is not found in the human nervous system.
The proposal should include justification as to why that particular adaption would benefit the humanoid more than any other adaptation to the nervous system.
Justifications should be based on known scientific principles and research.
Describe how this change or new organ would enable the humanoid to function better on this planet than on Earth.
Use reliable sources and identify the relevant information used for your analysis and justification.
Starting point: two review articles (Attached)
Find additional articles, discuss what is solid data, what is preliminary and needs more investigation. Where should further studies go?
Note: do not consider direct bacterial infections, e.g. Bacterial meningitis.
Choose the right answers
1 If the DNA sequence is AAG the amino acid that this encodes for is phenylalanine?
true or false
2 in which site of the ribosome does the charged tRNA move into initially?
a P site
b A site
c E site
d none of the sites
3 if the mRNA sequence is UAU then the amino acid this encodes for is valine?
true or false?
4 which site on the ribosome holds the growing polypeptide chain?
a E site
b A site
c Polypetide is not formed in a ribosome
d P site
5 A codon that encode for serine is AGU?
True or false
6 Can a person with type A blood and a person with type B blood have a chid with type O blood ?
a no it is impossible since A and B are dominant
b no, because they do not carry the O allele
c yes , if they both carry the O allele
Everything about Parkinson disease. How it is formed? Is it inherited how common is it ?What tests are performed and how it is taken care of.
How is Parkinson connected to the brain spinal cord and nerves.
What did you learn about anatomy of the digestive system from the first video??
Explain the functions of the enteric nervous system.
Why do you think the enteric nervous system is called the “second brain”
