Biology, 03.07.2019 23:00 sheram2010
Asubstance prepared from killed or weakened pathogens that is introduced into the body to stimulate an immune response is known as: an antigen a macrophage a vaccine a migraine
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Biology, 21.06.2019 19:30
Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5
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Biology, 22.06.2019 08:00
Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.
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Biology, 22.06.2019 08:30
Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above
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Asubstance prepared from killed or weakened pathogens that is introduced into the body to stimulate...
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