Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

As Level Biology WJEC > Unit 1.2 Cell Structure And Organisation > Flashcards

Unit 1.2 Cell Structure And Organisation Flashcards

1
Q

Microscopes:
Comparing light microscopes to electron microscopes

What is the source of image?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Microscopes:
Comparing light microscopes to electron microscopes

How is the beam focused?

A

Light microscope -
Use a condenser above the light source

Electron microscope -
Using a magnetic lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Microscopes:
Comparing light microscopes to electron microscopes

What is the max effect of magnification?

A

Light microscope -
x1500

Electron microscope -
x100,000 to x300,000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Microscopes:
Comparing light microscopes to electron microscopes

What is the max resolution?

A

Light microscope -
200nm

Electron microscope -
Around 0.050nm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Microscopes:
Comparing light microscopes to electron microscopes

Can a live specimen be used?

A

Light microscope -
Living and dead

Electron microscope -
No, the electrons destroy the specimen. Only use dead and dry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Microscopes:
Comparing light microscopes to electron microscopes

Section or external view of specimen?

A

Light microscope -
Electron microscope -

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Microscopes:
Comparing light microscopes to electron microscopes

How much do they cost?

A

Light microscope -
Electron microscope -

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Microscopes:
Comparing light microscopes to electron microscopes

Can the image be viewed directly?

A

Light microscope -
Yes

Electron microscope -
No, electrons cannot be observed by human eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Microscopes:
Comparing light microscopes to electron microscopes

Do you need to stain the specimen?

A

Light microscope -
Yes

Electron microscope -
Yes with heavy metals?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Microscopes:
What’s the definition of magnification?

A

Making something bigger/enlarging something

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Microscopes:
What is the definition of resolution?

A

How clearly you can see something

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Microscopes:
What are the different magnifications?

A

Eyepiece: x10
Objective: x4
Overall magnification: x40

Eyepiece: x10
Objective: x10
Overall magnification: x100

Eyepiece: x10
Objective: x40
Overall magnification: x400

Eyepiece: x10
Objective: x100
Overall magnification: x1000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Microscopes:

What equation includes image size, actual size and magnification?

A

Image size = actual size x magnification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Unit conversion:

cm to mm
m to mm
mm to micrometers
Micrometers to nm

A

cm to mm = x10
m to mm = x1000
mm to micrometers = x1000
Micrometers to nm = x1000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Can you briefly summarise eukaryotic cells?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Plasma membrane

Structure?
Function?
Found in plant or animal cells or both?

A
17
Q

Cytoplasm

Structure?
Function?
Found in plant or animal cells or both?

A

As Level Biology WJEC (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions