BIOL133 Week 1 Lab Assignment; Introduction to the Microscope
Course : American Public
Contributed : May Anderson
- $20.00
Exploration
- The combination of a 20x objective lens and a 10x ocular lens results in what total magnification?
- A microscope should always be carried with one hand on the and the .
Exercise 1
- What is the first step normally taken when you look through the ocular lenses?
- What does it mean that the image is inverted when you look through the ocular lenses?
- What is the difference between the coarse adjustment knob and the fine adjustment knob? When is it appropriate to use them?
- What new details are you able to see on the slide when the magnification is increased to 10x that you could not see at 4x? What about at 40x?
Competency Review
- What is the purpose of the revolving nosepiece?
- Only the coarse adjustment knob should be used when viewing an image with the high-power lens.
- Suppose you view a slide under the low-power lens of a microscope. You are able to focus the image, and increase the lens magnification. However, you have trouble focusing the image using the high-power lens. What action is most likely to resolve the issue?
- You need to use a compound microscope to view a bacteria sample. Through which lens type should you look?
- Which objective lens should you always use first when viewing a new slide?
