The type of technique that uses electrons to bombard a sample without altering it is: a...
The type of technique that uses electrons to bombard a sample without altering it is:
| a |
scanning electron microscopy |
|
| b |
mass spectrometry |
|
| c |
infrared spectrophotometry |
|
| d |
microwave spectrometry |
|
| e |
fluorescence microscopy |
Homework Answers
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The type of technique that uses electrons to bombard a sample
without altering it is:
a...
Match the information provided to the microscopy technique best suited for it. Both transmission and reflection...
Match the information provided to the microscopy technique best suited for it. Both transmission and reflection techniques are possible. Operates on quantum mechanical principles. Can operate in contact with the sample. A fluorescent screen is needed to make up or record an image. Both surface topography and chemistry play a role in the final image. A. Optical microscopy B. Scanning electron microscopy (SEM) C. Scanning tunneling microscopy (STM) D. Atomic force microscopy (AFM) E. Tunneling electron microscope (TEM)
Microblology 208 Summer 2019 Exam 2 1) A thin section of a bacterial Sample is cut...
Microblology 208 Summer 2019 Exam 2 1) A thin section of a bacterial Sample is cut with a knife and exposed to an electron beam. during: a) confocal microscopy b) fluorescent microscopy c) section electron microscopy d) scanning electron microscopy e) transmission electron microscopy 2) A bacterial sample is spray-coated with a metallic mixture and subjected to an electron bean during: a) confocal microscopy b) fluorescent microscopy c) surface electron microscopy d) scanning electron microscopy e) transmission electron microscopy 3)...
2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence...
2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence microscopy? A) Fluorescence microscopy is best at viewing rounded, thicker specimens B) Fluorescent light is emitted throughout the specimen due to fluorescent dyes conjugated to antibodies. C) Fluorescence microscopy is used to view dead specimens only. D) Fluorescence microscopy presents images in three dimensions. E) Fluorescence microscopy is able to overcome problems encountered with using confocal scanning microscopy. 4)While synthesizing a new green pigment,...
Which type of spectroscopy would be the best to measure the amount of red dye #40...
Which type of spectroscopy would be the best to measure the amount of red dye #40 in an aqueous sample Visible b) ultraviolet c) infrared d) atomic absorption e) atomic emission True or false Electron ionization mass spectrometry will allow you to differentiate structural isomers of the same molar mass Which one of the following atomic spectroscopy method gives the smallest detection limit for ion Flame absorption b) electrothermal absorption c) flame emission d) ICP torch emission
121. A graduate student is studying a pathological bacterial strain. As a part of a project...
121. A graduate student is studying a pathological bacterial strain. As a part of a project to develop an antibiotic against the bacterial strain, the student needs to determine the number of proteins present in the ribosome. The best technique for investigating this question is: A. Cell homogenization and centrifugation B. Phase contrast microscopy C. Brightfield microscopy D. Scanning electron microscopy E. Transmission electron microscopy
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron...
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron microscopy (EM]) could be used to observe each structure or phenomenon. Put "no" in the box if the technique could not be used. If light microscopy can be used, name one technique (bright-field, phase-contrast, fluorescence, etc.) that you think would be effective. You will find some useful information in Appendix 1 of this manual and Chapter 18 of your textbook. Structure or phenomenon Could...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cm the electrons are accelerated to a speed of 1.62x107 m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103 N/C perpendicular to...
Tabulate the similarities and differences between TEM(Transmission electron microscopy) and SEM(Scanning Electron Microscopy) regarding (a) sample...
Tabulate the similarities and differences between TEM(Transmission electron microscopy) and SEM(Scanning Electron Microscopy) regarding (a) sample preparation (4), (b) processing (4), (c) instrumentation (4), (d) detection (4) and (e) the structures that can be observed (3), (f) staining (3), (g) IHC (4) and (h) ISH (4).
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cmthe electrons are accelerated to a speed of 1.62x107m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103N/C perpendicular to the electron beam....
answer all please 11 Rank the following types of electromagnetic radiation from shortest wavelength to longest...
answer all please
11 Rank the following types of electromagnetic radiation from shortest wavelength to longest wavelength Visible, ultraviolet, microwave, infrared, x-ray A X-ray visible ultraviolet <infrared <microwave B X-ray ultraviolet visible <microwave <infrared CX-ray ultraviolet < visible <infrared < microwave D. infrared microwave <ultraviolet visible <X-ray E microwave <infrared <ultraviolet < visible <X-ray 12. What is the energy of a photo of yellow light whose wavelength is 589 nm? A 3.38 x 10-19 B 3.38 x 10-10 C. 1.77...
Microblology 208 Summer 2019 Exam 2 1) A thin section of a bacterial Sample is cut with a knife and exposed to an electron beam. during: a) confocal microscopy b) fluorescent microscopy c) section electron microscopy d) scanning electron microscopy e) transmission electron microscopy 2) A bacterial sample is spray-coated with a metallic mixture and subjected to an electron bean during: a) confocal microscopy b) fluorescent microscopy c) surface electron microscopy d) scanning electron microscopy e) transmission electron microscopy 3)...
2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence microscopy? A) Fluorescence microscopy is best at viewing rounded, thicker specimens B) Fluorescent light is emitted throughout the specimen due to fluorescent dyes conjugated to antibodies. C) Fluorescence microscopy is used to view dead specimens only. D) Fluorescence microscopy presents images in three dimensions. E) Fluorescence microscopy is able to overcome problems encountered with using confocal scanning microscopy. 4)While synthesizing a new green pigment,...
121. A graduate student is studying a pathological bacterial strain. As a part of a project to develop an antibiotic against the bacterial strain, the student needs to determine the number of proteins present in the ribosome. The best technique for investigating this question is: A. Cell homogenization and centrifugation B. Phase contrast microscopy C. Brightfield microscopy D. Scanning electron microscopy E. Transmission electron microscopy
1. Fill out the following table by indicating which general technique (light microscopy (LM) or electron microscopy (EM]) could be used to observe each structure or phenomenon. Put "no" in the box if the technique could not be used. If light microscopy can be used, name one technique (bright-field, phase-contrast, fluorescence, etc.) that you think would be effective. You will find some useful information in Appendix 1 of this manual and Chapter 18 of your textbook. Structure or phenomenon Could...
answer all please
11 Rank the following types of electromagnetic radiation from shortest wavelength to longest wavelength Visible, ultraviolet, microwave, infrared, x-ray A X-ray visible ultraviolet <infrared <microwave B X-ray ultraviolet visible <microwave <infrared CX-ray ultraviolet < visible <infrared < microwave D. infrared microwave <ultraviolet visible <X-ray E microwave <infrared <ultraviolet < visible <X-ray 12. What is the energy of a photo of yellow light whose wavelength is 589 nm? A 3.38 x 10-19 B 3.38 x 10-10 C. 1.77...
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