Intro to Cells, Cell theory, Scientists, and Microscopes

The arrow is pointing to this part of the microscope.

• eye piece

• stage

• objective lenses

• arm

Find the total magnification: 
Eyepiece = 10X 
Objective lens = 55X  

• 10x
• 55x
• 65x
• 550x

When looking at a specimen on your slide, you should always start with the

• low objective lens
• medium objective lens
• high objective lens
• super extra high power lens

The__________ sharpens the image under high magnification.

• the diaphragm
• fine adjustment knob
• coarse adjustment knob
• the ocular

Never use this when on high power.

• Fine adjustment

• Diaphragm

• Coarse adjustment

• Stage clips

Which of the following is NOT one of the three parts of Cell Theory?

• All living things are made of cells.
• The cell is the smallest living thing that can perform all the functions of life.
• Cells are too small to see without a microscope.  
• All cells must come from pre-existing cells.

According to cell theory, where did this cell come from?

• Another living cell
• Energy from sun
• A multicellular organism
• The nonliving environment

Light microscopes

• Are generally not used to view bacteria
• Work by reflecting electrons off the surface of an object being studied
• Typically provide more resolution than an electron microscope
• Use light and glass lenses to magnify an image

Who was the Englishman who drew the cell structure of a slice of cork?

• Schwann

• Hooke

• Pasteur

• Leeuwenhoek

The arrow is pointing to this part of the microscope.

• base

• objective lenses

• stage

• arm