True or False: During the initial examination for an epidemi…
True or False: During the initial examination for an epidemiological study, existing cases of coronary heart disease were identified in 5 per 1,000 men and 2 per 1,000 women. From this data, it would be reasonable to infer that men have a higher risk of developing coronary artery disease than women.
Read DetailsLucy, a 4-year old girl, is being evaluated in an outpatient…
Lucy, a 4-year old girl, is being evaluated in an outpatient clinic for occupational therapy services. She doesn’t have a medical diagnosis. Following a comprehensive school-based evaluation last year, Lucy was classified as a “Preschooler with a Disability” by her local school district and currently receives special education, speech-language pathology services, and occupational therapy services in her district home school. Lucy is 4 years old. All of the following tests will give relevant information about Lucy for medically-based services except for ____.
Read DetailsThe figure below is from Vandputte, et al., Applied and Envi…
The figure below is from Vandputte, et al., Applied and Environmental Microbiology, January 2010, Vol. 76: p. 243-253 (no need to look at the paper). They used Chromobacterium violaceum (A) and Pseudomonas aeruginosa (B) to examine the effects of the leaf and bark extracts (extracted using DMSO) from a tree (Combretum albiflorum). All of the wells have acyl homoserine lactones added and each row has three wells with the same samples (triplicate). The blue color in A is due to production of violacein, a pigment. The red color in B is due to pyocyanin production, a substance that is toxic to eukaryotic cells. The *** indicates this bar is significantly different from the DMSO (solvent control) bar. Question: What kind of system seems to be regulating the production of these colored substances? How does this system work? Why would they measure not only the production of the colored substances but also bacterial growth? What statement can you make regarding this figure? (What can you say about the leaf and bark extracts and which you would most prefer for what and why?)
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