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8 Jan 2018

Certain species of Bacteria have been identified to always cause obesity.

True or False?

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Deanna Hettinger
Deanna HettingerLv2
10 Jan 2018
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Related questions

In Personal Health:

The choices you make now can and will affect how long you live and how well you live. Obesity and physical inactivity have been identified as the 2nd leading cause of disability and early death. How can you personally change your eating and exercise habits to increase your chances of a longer, healthier life?

A hospital epidemiologist is trying to determine the cause of an outbreak in which eight patients developed fever, chills and shock, and two patients subsequently died. Gram-negative bacteria Pseudomonas aeruginosa, Klebsiella pneumoniae and another unidentified species were isolated from the IVs of these patients. However, the epidemiologist noted that of the IV fluids, needles and accompanying materials had been properly autoclaved before use, and the bacteria were dead. Explain what might have occurred to cause this outbreak in the hospital.

1.

Which of the following have been used by scientists to determine evolutionary relationships and divergence times between primate species or lineages?

A. evidence from the fossil record
B. behavioral observations of living primates
C. molecular phylogenies
D. all of the above
E. A and C are correct

2.

Problems with interpreting information from the fossil record include:

A. variation within one species may be misinterpreted (e.g. as multiple species rather than one)
B. differential preservation results in sample fossil populations which don’t reflect the size of past populations
C. a species sometimes has to be defined on the basis of only one fossil specimen
D. all of the above
E. none of the above; scientists don’t find any problems with interpreting fossils because the evidence is always so clear and unquestionable

3.

Cultural practices - such as those pertaining to agriculture - can play a significant role in influencing the evolution of infectious disease microbes.

True
False

4.

Populations that evolved to include high numbers of individuals with the "thrifty genotype" include higher frequencies of the following health problems:

A. influenza
B. obesity
C. diabetes
D. all of the above
E. B and C are correct

5.

Human behavior is one of the critical factors that contribute to the evolution of more virulent (harmful) bacterial and viral strains.

True
False

6.

Large agricultural and urban populations may be more vulnerable to infectious disease due to their:

A. larger population size
B. larger homes and dwelling structures
C. sedentary lifestyle
D. all of the above
E. both A and C are correct

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