Microbiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
Dark-field microscopy | light coming directly through specimen is blocked out, so that the light reflected off the bacteria is seen. Makes structures appear against a black background and seem bigger than they really are.
🗑
|
||||
Differential stain | differentiates between 2 common types of bacteria
🗑
|
||||
Electron microscopy | viruses are stained with a heavy metal and electrons are shined on them--electrons are more powerful than photons--can resolve down to 0.002 microns, to show even the tiniest of virus particles.
🗑
|
||||
Medium | a nutritious extract or mixture of materials that will support the growth of microbes.
🗑
|
||||
scanning electron microscopy | scattered electrons are detected and the object's surface is reconstructed by computer technology.--good for visualizing surface structures--resolves to about 0.02 microns
🗑
|
||||
Staining | dye added to the organisms to improve contrast and our ability to recognize the microbes--stained bacteria have a more apparent shape.
🗑
|
||||
Transmission electron microscopy | the electrons pass through the specimen. Heavy metals pile up around the virus and scatter electrons. This leaves dark areas that reflect the viral outline on the veiwing screen.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
heatherlvn
Popular Science sets