Microscopy

When using a microscope, you look down the...

A student looks at a plant cell under a microscope using a magnification of x 120. The image of the cell is 1.5cm in height. What is the height of the actual cell in mm?

Which of the following scientists was the first to observe bacteria under a microscope?

• Anton van Leuwenhoek
• Matthais Schleiden
• Robert Hooke
• Theodor Schwann

#3 in the picture is the - 

• Course adjustment knob
• Fine adjustment knob
• Scanning objective
• High power objective

#8 in the picture is the - 

• Light source
• Diaphragm
• Nose piece
• Ocular

#12 in the picture is the - 

• Course adjustment knob
• Fine adjustment knob
• Ocular lens
• Diaphragm

What do parts C & D do?

• move stage up and down to focus on specimen

• move stage left and right to move the slide

• adjust the amount of light

• change the objective magnification

Which type of microscope has the better resolution?

• Light microscope

• Electron micrscope

What type of microscope was likely used to obtain this image of a snowflake?

• Scanning Electron Microscope (SEM)
• Transmission Electron Microscope (TEM)
• Compound Light Microscope

#9 in the picture is the - 

• Ocular lens/Eyepiece
• Body tube
• Base
• Arm