Chapter 1: Discovering Cells Flashcards
0
Q
Microscope
A
An instrument that makes small objects look larger
1
Q
Cells
A
- Form the parts of an organism and carry out all its functions
- cells are the basic units of structure and function in living things
2
Q
Cell theory
A
A widely accepted explanation of the relationship between cells and living things
3
Q
Robert Hooke
A
• 1663
• discovered cells
-made first microscope
-studied dead cork oak tree
4
Q
Matthias Schleiden
A
Concluded that all plants are made of cells
5
Q
Theodor Schwann
A
Concluded all animals are made of cells
6
Q
Rudolf Virchow
A
- 1855
* found that all cells are reproduced by cells that already exist
7
Q
Anton van Leeuwenhoek
A
Revealed one celled organisms with drops of lake water and teeth scrapings
8
Q
Pieces of microscope(from top to bottom)
A
- Eyepiece lens
- Revolving nosepiece
- Lenses
- Lens
- Slide
- Stage
- Light rays
- Light source
9
Q
Resolution
A
The degree to which two separate structures that are close together can be distinguished
10
Q
Electron Microscopes
A
- use a beam of elections to produce a magnified image
- scientists can obtain pictures of objects that are too small to be seen with light microscopes
- higher magnification
11
Q
Cell theory states:
A
- all living things are composed of cells
- cells are the basic units of structure in living things
- all cells are produced from other cells
