Biology, 21.08.2019 00:30 heavendl13
If humans become infected with the ebola virus it can have devastating effects. strong, but not certain, evidence suggests that trading in animal products is the main reason for the spread of the ebola virus to humans. which statement about the precautionary principle is correct?
a. in the absence of certainty about cause and effect, people should not be asked to stop trading in animal products.
b. the burden of proof regarding a cause and effect relationship lies with scientists.
c. because it is a probable cause, trading in animal products should be banned because of the potentially devastating consequences.
d. the precautionary principle is not relevant in this case.
Answers: 1
Biology, 22.06.2019 01:20
Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen
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Biology, 22.06.2019 12:40
Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .
Answers: 1
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 23.06.2019 02:20
Explain three primary ways in which organisms depend on each other (symbiotic relationships)
Answers: 1
If humans become infected with the ebola virus it can have devastating effects. strong, but not cert...
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