Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
cell theory states that all living things composed of cells . |
تنص النظريه الخلويه على أن الكائنات الحيه تتكون من خلايا |
|
|
Sicentists use Microscoped to see cells |
يستعمل العلماء المجهر لرؤية الخليه |
|
|
LM light microscope |
- use visible light ( الضوء المرئي ) - Magnification 1000 ( تكبيرها ألف ) - using to see speciemen of micro 10^-6 size ( nucles ) ( يستخدم لرؤية العينات التي حجمها بالمايكرو كالنواه. ) |
|
|
EMs electron Microscope |
- Use beam of electrons - Magnification 100,000 - using to see speciemen of nano 10^-9 size like ( atoms , molecules , proteins ) |
|
|
tow typs of |
- Scaning ( SEMs ) - transmission ( TEMs ) |
|
|
- Scaning ( SEMs ) |
focus a beam of electrons onto the speciemen Surface and give 3d image
|
|
|
- transmission ( TEMs ) |
focus a beam of electrons through speciemen to study internal structures of cell .very important in biology |
