Term
| What can biologists use cell fractionation for? |
|
Definition
| isolate cell components or organelles and study their functions |
|
|
Term
|
Definition
| visible light passes through the specimen and then through glass lenses |
|
|
Term
| Definition of magnification: |
|
Definition
| ratio of an object's image to it's real size |
|
|
Term
|
Definition
measure of image clarity
(it is the minimum distance 2 points can be separated and still viewed as 2 separate points |
|
|
Term
|
Definition
| used to resolve smaller structures, focuses a beam of electrons through the specimen or onto its surface |
|
|
Term
| Transmission Electron Microscopes (TEM) are used________. |
|
Definition
to study the internal ultrastructure of cells
(the image is focused and magnified by electromagnets) |
|
|
Term
| Scanning Electron Microscopes (SEM)study ______. |
|
Definition
surface structures
(images result in what appears 3-D) |
|
|
Term
| Electron microscopes reveal ______, but they can only be used on ______ and they may introduce some artifcats. |
|
Definition
|
|
Term
| Light microscopes do not have as high a resolution, but they can be used to study _____. |
|
Definition
|
|
Term
|
Definition
| the study of cell structures |
|
|
Term
| What two forms of study developed modern cell biology? |
|
Definition
| Cytology and Biochemistry |
|
|
Term
| What is differential cell fractionation of cell extracts used for? |
|
Definition
| to seperate the major organelles of the cells so that their individual functions can be studied |
|
|
