15 Questions
What is the science that studies the microscopic appearance of cells?
Cytology
Who proposed the Cell Theory in 1839?
Matthais Schleiden and Theodor Schwann
What type of organism consists of only a single cell?
Unicellular organism
What is the smallest working unit of all living things according to the Cell Theory?
Cells
What are the three functions that all organisms, whether multicellular or unicellular, must accomplish?
Uptake and processing of nutrients, excretion of wastes, response to environmental stimuli
Which type of microscope is used to view thin specimens through which electrons can pass generating a projection image?
Transmission electron microscope (TEM)
What is the main function of a scanning electron microscope?
To depend on the emission of secondary electrons from the surface of a specimen
What is the primary purpose of a light microscope?
To pass visible light through the specimen and glass lenses
What is the technique used in electron microscopy to investigate the detailed structure of tissues, cells, organelles, and macromolecular complexes?
Transmission electron microscopy (TEM)
Which type of microscope is used to obtain high resolution images of biological and non-biological specimens?
Both TEM and SEM
Which type of microscope is used to pass visible light through the specimen and glass lenses?
Light microscope (LM)
What is the main difference between transmission electron microscope (TEM) and scanning electron microscope (SEM)?
TEM generates projection images while SEM depends on the emission of secondary electrons from the specimen's surface
What is the function of glass lenses in a light microscope (LM)?
To refract light and form an image
Which type of microscope is suitable for viewing tissue sections and molecules?
Transmission electron microscope (TEM)
In what way does the transmission electron microscope (TEM) differ from the light microscope (LM)?
TEM is used to view thin specimens generating a projection image while LM depends on the emission of secondary electrons from the specimen's surface
Test your knowledge about the structure, types, and functions of cells in living organisms. Learn about the components of cells, different cell types, and their roles in the body.
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