Microscope Usage and Techniques Quiz

What is the magnification power of the eyepieces mentioned in the video?

• 10x

• 5x

• 20x

• 15x

Which objective lens requires the use of oil for better clarity?

• 100x

• 10x

• 4x

• 40x

What can be used as an alternative to a built-in light source in a microscope?

• A flashlight

• A mirror

• A laser pointer

• A candle

What is the purpose of adjusting the condenser in a microscope?

• To adjust the color of the image

• To focus the light onto the image

• To clean the lens

• To change the magnification

Why is oil used in the oil immersion technique?

• To clean the slide

• To prevent the slide from moving

• To match the refractive index of glass

• To magnify the image further

What should be done to avoid damaging the slide when using oil immersion?

• Use a thicker slide

• Gently lift the stage into the oil

• Use a lower magnification

• Apply more oil

What is the initial position of the stage when starting to focus the microscope?

• As low as possible

• In the middle

• As high as possible

• At a random position

What color do gram-negative cells appear under the microscope?

• Blue

• Pink

• Yellow

• Green

What shape are the gram-negative cells observed in the video?

• Spiral

• Spherical

• Rod-shaped

• Irregular

What is the benefit of having a well-prepared slide?

• It enhances the color of the cells

• It makes it easier to identify individual cells

• It allows for faster viewing

• It reduces the need for oil