Cell Theory Answers

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Which microscope did Robert Hooke use to study tree bark?

electron microscope

compound light microscope

simple 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 is a part of the cell theory?

cells come from pre-existing cells

cells have a nucleus

organisms with one cell must be seen with a microscope

organisms must have more than one cell to live

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

microbe

atom

DNA

oak bark

Which was Venter’s contribution to science?

discovered the existence of single-celled organisms

invented the light microscope

discovered the structure of DNA

invented a synthetic cell

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

Theodor Schwann

Robert Hooke

Anton van Leeuwenhoek

Matthias Schleiden

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