Term
| What are the 3 parts of cell theory? |
|
Definition
1. All living creatures are made up of cells
2. The smallest unit capable of life is a single cell
3. All cells come from pre-existing cells |
|
|
Term
| Why don't cells get bigger than they are? |
|
Definition
| They need a lot of surface area to keep the insides (volume) alive, and the larger the cell, the smaller the proportion of surface area to volume. |
|
|
Term
| What are 3 advantages of light microscopes? |
|
Definition
You can observe cell shape
You can observe cell type
You can observe living cells |
|
|
Term
| What are two disadvantages to light microscopes? |
|
Definition
Limited to 1000x magnification
Can't see much of a cell's insides |
|
|
Term
| When was the microscope invented? |
|
Definition
|
|
Term
| What are two advantages of an electron microscope? |
|
Definition
1. Up to 100,000x magnification (and growing)
2. Allows us to see inside cells and examine their parts |
|
|
Term
| What are two disadvantages of an electron microscope? |
|
Definition
1. The cell must be dead
2. They are very expensive and difficult to use |
|
|
