Cell Theory Foundation
Growth in the multicellular organisms occurs through this process rather than a cell enlargement.
What is cell division?
This scientist first described cells after observing cork.
Who is Robert Hooke?
This part holds the slide in place.
What are the stage clips?
The key difference between compound microscope specimens and electron microscope specimens
What is living and non-living?
This idea claimed life could arise from non-living matter.
What is spontaneous generation?
The first part of cell theory.
What is all living things are made up of 1 or more cells.
The scientist that first observed microorganisms.
Who is Antonie van Leeuwenhoek?
The total magnification power of the ocular lens (10x) and the objective lens (4x).
What is 40x magnification power?
This microscope shows the outside surface of a specimen by reflecting electrons back to a detector that produces an image.
What is a Scanning Electron Microscope (SEM)?
This scientist showed maggots come from flies, not meat.
Who is Francesco Redi?
This statement of cell theory directly contradicts spontaneous generation.
What is “all cells come from preexisting cells”?
The scientist that boiled broth to show microbes did not spontaneously appear.
Who is Lazzaro Spallanzani?
This is used to create more contrast when observing cells/organisms.
What is stain?
This microscope used electrons to view inside the cell.
What is a Transmission Electron Microscope (TEM)?
The scientist the criticized Needham’s experiment.
Who is Lazzaro Spallanzani?
Without this principle, tissue repair and healing could not be explained.
What is “Cells are the basic structural and functional units of life”?
This feature of Pasteur’s experiment allowed air in but prevented contamination.
What is the swan-neck flask?
This part is used to switch between objective lenses.
What is the revolving nosepiece?
This is needed to differentiate between two points that are close together under a microscope.
What is a high resolving power?
This scientist resolved the air vs life debate using a curved flask.
Who is Louis Pasteur?
The years that the cell theory was primarily created?
What is 1838-1839
These three scientists collectively formed the classical cell theory.
Who are Schleiden, Schwann, and Virchow?
A field diameter is 0.4cm, what is the conversion to micrometers?
4000um
Before viewing with SEM, specimens are often coated with this material.
What is gold?
Together these scientists’ experiments shifted biology toward evidence-based science.
What are Redi’s, Spallanzani’s, and Pasteur’s experiments?