Tag: cell and cellular organization
Questions Related to cell and cellular organization
Leeuwenhoek was the first who observed .......... under the microscope.
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Fungi
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Virus
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Bacteria
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Plant cell wall
9X was the maximum magnification of .......... microscope.
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First
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Second
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Advanced
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None of the above
A- A microscope helps in magnifying small objects. Zacharias Jansen and his father Hans created the first microscope in 1595. This microscope was made up of a long brass tube with two lenses. 9X was the maximum magnification of this microscope. Magnification helps in viewing an object by making it larger.
Single lens microscope was built by
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Robert Hook
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Robert Koch
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Leeuwenhoek
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Janssen
Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.
Microscope used by Robert Hooke had a magnification of
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$10-20$x
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$14-42$x
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$8-16$x
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$16-64$x
The term cytology was coined by
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Hertwig.
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Robert Hooke.
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Dutrochet.
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Corti.
Oscar Hertwig is a German zoologist and a professor who coined the term cytology. The cytology means the branch of biology which deals with the study of structure and functioning of plant and animal cell.
An optical instrument used to observe small organism is called as_____________.
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Microscope
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Telescope
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Magnifying lens
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Both A and B
A- Microscope is a device which is used to view objects that are very small for the naked eye. Light microscopes also known as optical microscopes are the most common type of microscopes. Optical microscopes utilize light and lenses to magnify images.
The cell arises from pre-existing cell was stated by
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Haeckel
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Virchow
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Hooke
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Schleiden
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All living organisms are composed of one or more cells.
- The cell is the most basic unit of life. The third was added by Rudolf Virchow in 1855, which stated: "Omnis cellula e cellula" which means all cells arise only from pre-existing cells.
The term microscope was coined by
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Janssens
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Faber
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Hooke
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Leeuwenhoek
The scientist who saw the living cell for the first time was
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Leeuwenhoek
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M. J. Schleiden
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Kolliker
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Pallade
- Antonie van Leeuwenhoek was the first to notice living cells under his microscope which he called animalcules through his preliminary microscope.
- M.J. Schleiden co-founded cell theory.
- Kolliker has made major contributions to viewing zoological and histological samples.
- Pallade was awarded the noble for discovering the ribosomes and rough endoplasmic reticulum. Thus, the correct answer is option A.
The name 'cell' was coined by
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Leeuwenhoek
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Robert Brown
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Robert Hook
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Galileo
Robert Hook, an English scientist, discovered a honey-comb like structure in a cork slice using a primitive compound microscope. Since a piece of cork slice is dead tissue so he could only see hollow compartment as the protoplasm was not present in these dead compartments. These compartments were called as 'cell' by him.