Test 3 Flashcards
What is the first step in preparing a slide for microscopy?
Add a drop of water to the middle of a clean slide.
What type of tissue should be peeled off an onion layer for microscopic observation?
Epidermal tissue.
What is the purpose of adding iodine solution to the slide?
Iodine solution is a stain that makes different parts of a cell easier to see.
What should you avoid when placing a cover slip on the slide?
Getting any air bubbles under it.
What is the first action to take when using a light microscope?
Clip the slide onto the stage.
Which objective lens should be selected first when using a light microscope?
The objective lens with the lowest magnification.
What is the purpose of the coarse adjustment knob?
To move the stage up to just below the objective lens.
What should you do if the image is not in focus?
Move the stage downwards until the image is roughly in focus.
What is the function of the fine adjustment knob?
To get a clear image of what’s on the slide.
What should you include when drawing your observations from the microscope?
A title and a scale.
When drawing what you see under the microscope, what type of lines should you use?
Smooth lines.
What should be avoided when labeling the features in your drawing?
Lines crossing over each other.
What should the drawing occupy in relation to the available space?
At least half the space available.
What tool is recommended for drawing observations under the microscope?
A pencil with a sharp point.
What is the magnification that was observed under in the practical example?
x 110.
