Cell Theory

Through which microscope were cells first observed?

• simple microscope

• tunneling microscope

• compound light microscope

• electron microscope

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

• A compound microscope has greater magnification ability than a simple microscope.

• The compound microscope was invented before the simple microscope.

• A compound microscope is much easier to manufacture than a simple microscope.

• Compound microscopes were more common than simple microscopes.

Which microscope did Robert Hooke use to study tree bark?

• electron microscope

• compound light microscope

• simple microscope

• scanning microscope

Which microscope did Anton van Leeuwenhoek use to observe single-celled organisms?

• simple microscope

• compound light microscope

• electron microscope

• tunneling microscope

In the 1600s, which scientist discovered microbes in pond water by using a microscope?

• Theodor Schwann

• Robert Hooke

• Anton van Leeuwenhoek

• Matthias Schleiden

Which was the first “cell” viewed by the light microscope?

• microbe

• atom

• DNA

• oak bark

Which microscope uses a series of lenses to magnify an object in steps?

• electron microscope

• simple microscope

• compound light microscope

• scanning microscope

Which reason best explains why dead specimens must be used with transmission electron microscopes?

• Electrons pass over the specimen.

• The lights that are used are harmful to the specimens.

• Specimens are placed in a vacuum.

• The image that is produced is two dimensional.

Which microscope is often used to view metal surfaces?

• scanning electron microscope

• scanning tunneling microscope

• transmission electron microscope

• compound light microscope

What do scanning electron microscopes and transmission electron microscopes have in common?

• Both generate three-dimensional images.

• Both offer magnification to the atomic level.

• Both are used to view the parts of a cell.

• Both require a vacuum.