Why are electron microscopes more useful than light microscopes for looking at organelles?
Answer=An Electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination and in light microscope visible light photons is used for magnification.As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, Electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects.Thus electron microscopes more useful than light microscopes for looking at organelles.
Why are electron microscopes more useful than light microscopes for looking at organelles?
There are more cells than organelles in the human body. Briefly explain why it is false or reword it to make it true.
Compare AND contrast the 2 groups of microscopes: light (compound and stereomicroscope) and electron (scanning and transmission). Make sure to include at least 5 similarities and/or differences
5) What is the wavelength of light an electron that has an energy of 10,000 eV. What is the wavelength if it has 40,000 eV of kinetic energy. By what fraction has the wavelength changed? (me for an electron is 0.511 x10° eV] Why are electron microscopes sharper than light microscopes. Compare the wavelength of green light (520 nm) to that of the 40,000 eV electrons. How many times is the electron wavelength smaller? What would the wavelength of a...
QUESTION 9 Which of the following microscopes produce flat images by utilizing light in the non-visual spectrum to excite molecules within the specimens to produce visual light? Darkfield Microscope Confocal Microscope Phase Contrast Microscope Fluorescent Microscope Brightfield Microscope Electron Microscope QUESTION 10 Which type of microscope does not use glass lenses or mirrors in order to focus and view a specimen? Brightfield Microscope Darkfield Microscope Confocal Microscope Phase Contrast Microscope Electron Microscope Fluorescent Microscope
1. Why is the Electron Affinity of chlorine more favorable (that is, more negative) than fluorine? This is surprising as fluorine is the most electronegative element. 2. The second Electron Affinity for oxygen is positive and very large, meaning it is unfavorable. But the most common ion of oxygen is oxide, O2−. How can you explain this, aside from using the octet rule? 3. Ammonia (NH3) has a greater dipole moment than nitrogen trifluoride (NF3). This means that ammonia is...
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...
Why do the phycobilins found in red algae trap more light energy than chlorophyll in deep water? Which of the green algae are motile? How do these organisms move? How are the pseudopodia of these amoebas different than the pseudopodia of Foramens and Radiolarians? Can you see any internal structures in the bacteria? Why or why not? Given the differences between bacterial and animal cells as previously discussesed, what aspects of abcterial structure might be good targets for antimicrobial agents?...
What is meant by the dual nature of light? Why is it useful to think of light in this way?Why is the sky blue and why are sunrises and sunsets reddish? Explain using the dual nature of light.
QUESTION 10 Why do accrual basis financial statements provide more useful information than cash-basis statements? TTT Anal 3 (12pt) THEHES Path:p Words:0 QUESTION 11 Quinn Becker is president of Better Books. She has no accounting background. Becker cannot understand why fair value is not used as the basis for all accounting measurement and reporting. Discuss.
Will the image produced by light passing through more than one lens always be upside down? Explain why.