Which of the following best explains how a scanning electron microscope is used to produce an image of a specimen? an electron beam strikes the specimen, is absorbed by the specimen, and used to produce an electrically charged image on a screen. an electron beam passes over the specimen’s surface and displaces electrons, which are then focused on a screen to form an image. an electron beam traces an outline of the specimen onto a screen, and reflected electrons are collected to form the rest of the image. an electron beam travels through the specimen, and as it does so it burns an image of the specimen on a screen.
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Biology, 22.06.2019 08:30
Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.
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Biology, 22.06.2019 12:30
This is the interaction of two organisms where one is and the other is neither nor harmed.
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Biology, 22.06.2019 14:30
Fill in the blank with the best word to complete the sentence. white blood cells protect against and aid in blood clotting when injuries are sustained.
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Which of the following best explains how a scanning electron microscope is used to produce an image...
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