Microscopy and Cell Theory

Cell Theory & Microscopes

COUNTDOWN TO EOC!

Multiple Choice

The Endosymbiotic Theory gives an explanation of how eukaryotic cells could have evolved from prokaryotic cells. Which part of the Cell Theory supports this explanation?

• Cells are the basic unit of structure & function of living organisms

• All living things are made of cells

• All cells come from pre-existing cells

Multiple Choice

Which statement is NOT a part of the Cell Theory?

• All cells come from pre-existing cells

• All living things are made of cells

• All cells form from spontaneous generations

• Cells are the basic unit of structure & function of living organisms

Multiple Select

Check all that applies to the Cell Theory:

• Plants

• Animals

• Bacteria

• Water

Multiple Select

Muscle cells, commonly known as myocytes, are the cells that make up muscle tissue. These cells form the muscle that we use to move and produce contraction. Which part(s) of the Cell Theory does this statement BEST relate to?

• All living things are made up of cells

• All cells come from pre-existing cells

• Cells are the basic unit of structure and function in living organisms

• Cells form from spontaneous generations

Multiple Choice

How can we see cells?

• Light Microscopes

• Electron Microscopes

• Both

Multiple Choice

Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than

• a beam of light.

• a beam of compounds

• a beam of cells

• a beam of specimens

A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons

The transmission electron microscope is used to view thin specimens (tissue sections, molecules, etc) through which electrons can pass generating a projection image.

Multiple Choice

Type of microscope that commonly uses visible light and a system of lenses to magnify images of small objects

• Electron Microscope

• Scanning Electron Microscope

• Transmission Electron Microscope

• Light Microscope

A dissecting microscope is used to view three-dimensional objects and larger specimens, with a maximum magnification of 100x

Typically, a compound microscope is used for viewing samples at high magnification (40 - 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens (in the eyepiece) and the objective lenses (close to the sample).