Microscope Operation and Functionality

The video tutorial introduces the concept of microscopy, explaining the difference between visible and microscopic observation. It details the components and functions of a microscope, including the eyepiece, objective lens, and focus knobs. The tutorial provides a step-by-step guide on preparing slides and using the microscope to view microorganisms, cells, and other small entities. It also covers how to calculate magnification by multiplying the eyepiece and lens values. The video concludes with additional resources for further learning.

What is the primary reason we use microscopes?

• To magnify large objects

• To change the color of objects

• To view extremely small objects

• To see things that are far away

What does the 'micro' in microscope mean?

• Large

• Invisible

• Extremely small

• Medium

Which of the following is an example of a microorganism?

• A tree

• A leaf

• A rock

• A mite

What is the first step in preparing a slide for microscopic observation?

• Add dye to the slide

• Place a cover slip on the slide

• Spread a sample on the slide

• Focus the microscope

What is the purpose of using a dye like iodine on a slide?

• To protect the cells

• To magnify the cells

• To clean the slide

• To stain the cells for better visibility

Which part of the microscope is used to view the image?

• Eyepiece

• Focus knob

• Stage

• Objective lens

What is the function of the coarse focus knob?

• To change the light intensity

• To adjust the stage height

• To bring the image into rough focus

• To switch between lenses

What should you do first to view an image under a microscope?

• Select the highest magnification lens

• Select the lowest magnification lens

• Turn the fine focus knob

• Add more dye to the slide

How do you calculate the total magnification of an image?

• Add the eyepiece and lens magnifications

• Multiply the eyepiece and lens magnifications

• Divide the lens magnification by the eyepiece

• Subtract the lens magnification from the eyepiece

If the eyepiece is 10x and the lens is 4x, what is the total magnification?

• 400x

• 100x

• 40x

• 14x