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According to Wikipedia: Viruses are ancient. Studies at the molecular level have revealed relationships that show viral proteins that pre-date the divergence of life and thus the last universal common ancestor. This indicates that some viruses emerged early in the evolution of life, and that viruses have probably arisen multiple times.
What else can I help you with?
Are viruses seen under an electron microscope?
Only the largest of viruses (e.g. Pox viruses) can be seen with a good light microscope (albeit with poor detail). Viruses usually can only be seen by electron microscopy. [2nd year Dental student, Naser]
What microscope was used to see oxygen?
The first microscope used to observe oxygen was the optical microscope, which uses visible light to magnify objects. Oxygen itself cannot be seen under a microscope, but its effects on other substances can be observed. More advanced microscopes like electron microscopes can provide detailed images of oxygen-containing molecules.
What is a detection beam on a microscope?
A detection beam on a microscope is a focused light or electron beam used to capture the signals emitted by a sample under observation. It helps to gather information about the specimen's properties, such as its structure, composition, or fluorescence. Detection beams are crucial in generating images or data in various microscopy techniques, such as optical and electron microscopy.
Where can one purchase a transmission electron microscopy?
High quality electron microscopes can cost from $250000 to $1000000;but a 500W USB electron microscope/digital optical microscope 400x costs under $100.
Why are metal stains used for electron microscope?
Metal stains are used in electron microscopy to enhance contrast and visibility of cellular structures. Metals such as osmium or lead bind strongly to cell components, allowing for better visualization under the electron beam. This helps researchers to identify and study finer details within cells and tissues.
Can you see bacteria with viruses under microscope?
Yes, bacteria can be seen under a light microscope as they are larger than viruses. However, viruses are much smaller and cannot be seen with a light microscope. Specialized electron microscopes are required to visualize viruses.
How is it possible to study viruses under the light microscope?
Viruses cannot be seen under a light microscope as they are too small. However, techniques like electron microscopy and immunofluorescence can be used to visualize viruses. By tagging viruses with fluorescent markers or using more powerful electron microscopes, researchers can study viruses in greater detail.
Can Viruses be seen with a light microscope.?
Viruses are too small to be seen directly with a light microscope.Can be seen when it's examined under an electron microscope
What can be seen under a electron microscope and not a light microscope?
An electron microscope has a much higher magnifying power and resolution than a regular light microscope. One can visualize molecules and even atoms using an electron microscope. This is not possible with a light microscope
Why were viruses discovered recently?
Viruses were discovered recently because they are microscopic and cannot be seen under a regular microscope. The invention of the electron microscope in the 20th century allowed scientists to visualize and study viruses, leading to their discovery.
Are viruses seen under an electron microscope?
Only the largest of viruses (e.g. Pox viruses) can be seen with a good light microscope (albeit with poor detail). Viruses usually can only be seen by electron microscopy. [2nd year Dental student, Naser]
Can really be an electron seen under microscope?
only under an electron microscope wiki it
What is the smallest object that can be seen under an electron microscope?
Down to 1 Angstrom = 0,000 000 000 1 meter. The smallest "object" That can be seen under an electron microscope is most likely the electronAnother opinionThe atom is the smallest!
Bacteria were first seen in 1683 but viruses were not seen until 1938why?
Bacteria are much larger than viruses and can be seen under a light microscope, which was available in the 17th century. In contrast, viruses are much smaller and can only be seen with the invention of the electron microscope in the 20th century, leading to their discovery in 1938. This difference in size and technology needed for visualization explains the lag in discovery between bacteria and viruses.
What can be seen under a electron microscope but not a light microscope?
You can see a hair fiber well using an optical microscope, but you can hardly see a dimension 100 times smaller (about 10 microns). An electron microscope can review features as small as 10 nm, about 1/100000 th of a fiber.
Why are individual cells not visible under an electron microscope?
Individual cells are not visible under an electron microscope because the resolution of the microscope is not high enough to distinguish the borders of individual cells. The electron microscope's resolution is limited by the wavelength of electrons used, preventing the visualization of single cells. Cells can be seen collectively as tissues or structures under an electron microscope.
What is the minimum size of the organism which could be seen under microscope?
Depends, optic microscopes don't see much smaller than a nucleus very well, organelles such as mitochondria are seen as specks if you have a good microscope. To see more detail, you need an electron microscope (transmission or scanning), with which you can even see objects as small as viruses.
