Lab Exam 1

Question 1

How many times can the lenses of a compound microscope magnify an object?

Answer 1

Low Power: 10X4=40x
Medium Power: 10x10=100x
High Power: 10X40=400x

Question 2

How many times can the lenses of a dissecting microscope magnify an object?

Answer 2

Low Power: 10X0.8=8x
Medium Power: 10x2=20X
High Power: 10X4=40X

Question 3

What are the fields of view for a compound microscope?

Answer 3

Low: 5mm (5000um)
Med: 2mm(2000um)
High: 0.5mm(500um)

Question 4

Compound scopes have greater…

Answer 4

Magnification and resolution at the cost of field of view and depth of field

Question 5

Dissecting Scopes have greater…

Answer 5

Field of view and depth of field at the cost of resolution and magnification

Question 6

Calculate the size of an object under low power

Answer 6

Actual size= field of view (mm)/# of organisms that fit across field of view

Question 7

How many times do ocular lenses magnify?

Answer 7

10X

Question 8

Name the three Protist phylums studied

Answer 8

Euglenzoa, Rhizopoda (Amoebas),Ciliphora (Vorticella and paramecium).