REAL Science Odyssey Biology 2 Teacher Guide ... - Pandia Press

Types
Biology Level 2 Teacher Guide
With his microscope, Van Leeuwenhoek was the first person to see bacteria,
unicellular eukaryotes, blood cells, and much more. It was not a compound
microscope, though. It was more like a very strong magnifying glass. The bacteria
that Van Leeuwenhoek discovered came from scrapings from an old man’s teeth.
This man had never brushed his teeth in his life! EW! YUCH!
When and where was he born? October 24, 1632 in Del, Holland
When did he die? August 30, 1723
He was inspired aer reading a famous book wrien by Robert Hooke. What is
the tle? Micrographia
It has been speculated that the Dutch painter Johannes Vermeer used opcal
aids produced by Van Leeuwenhoek. How would these have help Vermeer? It might
be that Vermeer used opcal aids produced by Van Leeuwenhoek to get a beer feel
for light and perspecve in his painngs.
How many microscopes did Van Leeuwenhoek make? What happened to them?
Van Leeuwenhoek made over 500 microscopes. Unfortunately, he made them out
of silver and gold. When he died, his family sold them for the monetary value of the
metal.
Learn
Show What
You Know
Cell Types
Mulple Choice:
1. A shark is made from eukaryoc cells.
2. The bacteria that causes strep throat are made from prokaryoc cells.
3. The basic unit of structure and funcon of an organism is called a cell.
4. Unicellular organisms are prokaryotes and eukaryotes.
5. DNA
cell membrane
cytoplasm
Prokaryotic Cell
Eukaryotic Cell
nucleus
Fill In the Blanks:
The Cell Theory states:
6. Every organism is made of one or more cells.
7. Cells come only from other living cells.
8. Cells are the basic unit of structure and funcon needed to
support life.
9. Queson:
What famous scienst coined the term cell? Why didn’t he
see a nucleus, cell membrane, cytoplasm, or genec material?
Robert Hooke. He didn’t see these things because the cells
he saw with his microscope were “dead” cells. They were no
longer part of a living organism. He saw the cell walls. The
nucleus, cell membrane, cytoplasm, and genec material had
decomposed and disintegrated long before he looked at the
cork with his microscope.
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