Microscopes

Question 1

Are atoms microscopic? Why?

Answer 1

No, because you can’t see them with a microscope, they’re too small

Question 2

What does it mean if something is biological?

Answer 2

It comes from a living thing

Question 3

Where is protein synthesis found?

Answer 3

In ribosomes

Question 4

What is the equation to work out the actual size of an image viewed through the microscope?

Answer 4

Actual size = image size / magnification

Question 5

What does image size mean?

Answer 5

Size of the picture (measure it)

Question 6

What is magnification?

Answer 6

How much bigger the image is than the actual size

Question 7

What is the equation to work out image size?

Answer 7

Image size = actual size x magnification

Question 8

What is the equation to work out magnification?

Answer 8

Magnification + image size / actual size

Question 9

What is resolution?

Answer 9

The smallest distance between two points that can be seen as two points

Question 10

Why do we stain specimen cells with iodine?

Answer 10

So we can see them more easily.

Question 11

What do we put before the magnification when writing magnification?

Answer 11

An x sign

Question 12

In a cells, where are the ribosomes usually found?

Answer 12

Near the nucleus

Question 13

Who created the light microscope?

Answer 13

Robert Hooke

Question 14

What was the magnification of Robert Hookes microscope?

Answer 14

X30

Question 15

If the magnification is x30, how much bigger will the image viewed be than actual size?

Answer 15

30 times

Question 16

What are the two types of lens in a modern light microscope?

Answer 16

Eyepiece lens and objective lens

Question 17

If an eyepiece lens has a magnification of x10 and the objective lens has a magnification of x4 what is the total magnification?

Answer 17

X40

Question 18

What is the field of view?

Answer 18

What you see through the microscope

Question 19

What do electron microscopes allow us to see?

Answer 19

Sub cellular structures

Question 20

What are micrographs?

Answer 20

Computer generated images from an electron microscope

Question 21

Four steps to using a microscope

Answer 21

1) Place the slide on the stage and look through the eyepiece lens
2) Make sure the smallest objective lens is on
3) Turn the focusing wheel to get a clear image
4) Increase the magnification of the objective lens

Question 22

On a microscope, how can we identify the objective lens?

Answer 22

The small red one

Question 23

On a microscope, how can we identify the focus wheel?

Answer 23

The big one

Question 24

How do we carry a microscope?

Answer 24

Keep one hand on base and one hand on grip

Question 25

Three simple steps to getting a specimen on a slide ready for viewing?

Answer 25

1) Place a drop of iodine solution on the slide
2) Place specimen on drop on the slide
3) Gently lower a coverslip onto the slide at a 45* angle

Question 26

What are three important rules to use when drawing a biological drawing?

Answer 26

Continuous lines - no sketching
Label lines don’t cross, no arrow heads, drawn with ruler
No shading or colouring