Mathsy Biology Stuff :( Flashcards

1
Q

What is the equation for total magnification?

A

Total Magnification = magnification of eyepiece x magnification of objective lens

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2
Q

How does a light microscope work?

A

Focused glass lenses, image made with light

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3
Q

How does an electron microscope work?

A

Using beams of electrons
SEM scan surface
TEM penetrate a sample

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4
Q

Pros and cons of light microscopes

A

Pros
- Portable
- Can use living specimens
- more affordable
- most people can use it
- in colour

Cons
- Lower resolution
- Lower magnification
- can’t see organelles

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5
Q

Pros and cons of election microscopes

A

Pros
- High magnification
- High resolution

Cons
- Not portable
- Cells must be dead
- More expensive
- Need extensive training to use it

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6
Q

What do order of magnitude 1 and 3 mean

A

Order of magnitude 1: something is 10x bigger

Order of magnitude 3: something is 101010x bigger (1000x bigger)

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7
Q

What is Quantitative data?

A

Numerical data
- can be repeated as it does not vary from person to person

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8
Q

What is Qualitative data?

A

Non numerical data
- not always reliable as it varies from person to person, repeats can’t be used

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9
Q

1 cm = ? mm

A

10

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10
Q

1 mm = ? um

A

1000

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11
Q

1 um = ? nm

A

1000

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