Microscope Parts Microns and Focusing Steps to Using A Microscope Miscellaneous Measuring/ Protists
100
Eyepiece
What is the tool you look through to see the specimen?
100
4,000
How many microns are shown on low power?
100
What power do you use first?
Low power
100
Did anyone laugh at Anton van Leeuwenhoek?
Yes
100
If an image of a blepharisma is about half way across the microscope at high power, how large is it?
250 microns
200
Base or Foot
What is the bottom of the microscope, keeping it from toppling over?
200
How many microns are shown on medium power?
2,000
200
What should you do before switching to high power?
Center it
200
What tool do you use to define a specimen?
Dichotomous Key
200
What protist is worm-like and visible to the naked eye?
Spirostomum
300
Coarse adjustment knob and fine adjustment knob
What are the two knobs found on the arm of the microscope and are used to focus on the specimen?
300
How many microns are shown on high power?
500
300
What must you never do while on high power?
Move the slide
300
What tool is used while examining objects closely?
Microscope
300
If an image of a volvox is about a three quarters way across the microscope at medium power, how large is it?
750
400
Low, Medium, and High
What are the three powers of the lenses on the microscope?
400
When using low and medium power, what knob is used to focus?
Coarse adjustment knob
400
When the slide is moved up and to the right, what direction does it appear to be going through the microscope?
Down and to the left
400
Who invented the first microscope?
Anton van Leeuwenhoek
(Ant on van leaving hook)
400
What protist has pseudopods and no definite shape?
Amoeba
500
Diaphragm
What is the part of the microscope that controls how much light is seen?
500
When using high power, what knob is used to focus?
Fine adjustment knob
500
What diaphragm setting (in the form of a number) gives you the least light?
1
500
When was Anton van Leeuwenhoek born?
1632
500
What two protists are partially plant?
Volvox and Euglena






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