Unit 1: Cell Biology <> Microscopes

Question 1

Why should a lower power objective lens be used to first when viewing cells

Answer 1

A lower power objective lens should be used to have a wider field of view

Question 2

Eyepiece lens mag ? = Magnification

Answer 2

Eyepiece lens mag × Objective lens mag = magnification

Question 3

What term is used to describe a microscope’s ability to show detail

Answer 3

A microscope’s ability to show detail is called resolution

Question 4

What is the name of the platform where a slide is placed

Answer 4

The slide is placed on the stage

Question 5

What is calculated by doing

Image size ÷ Magnification

Answer 5

Image size ÷ Magnification = Actual size

Question 6

If the size of an image is 5mm and the magnification is 10, what is the size of the real object in μm

Answer 6

Actual size = Image size Magnification
Actual size = 5 ÷ 10
Actual size = 0.5mm
Actual size = 0.5 ÷ 1000 
Actual size = 500μm

Question 7

How do you convert μm (micrometers) into mm (millimeters)

Answer 7

μm ÷ 1000 = mm

Question 8

What type of microscope would be used in a lab by cell biologists

Answer 8

An electron microscope would be used by cell biologists

Question 9

What is the name given to making an object appear larger using a microscope

Answer 9

Magnification is making an object appear larger using a microscope