# As biology unit 1 calculations and formulas

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#1
Hi can someone please list all the possible calculations for unit 1
Don't want to throw away easy marks

Also if anybody wants to share ways of remembering them then I'm sure it'll benefit everyone!
0
9 years ago
#2
Stroke Volume
Magnification
Heart Rate
Cardiac Output
Percentage increase/decrease

Don't forget, all biology calculations are aimed at E grade maths.
A moron gets them wrong.

Also, DON'T FORGET UNITS.
1
9 years ago
#3
(Original post by Scienceisgood)
Stroke Volume
Magnification
Heart Rate
Cardiac Output
Percentage increase/decrease

Don't forget, all biology calculations are aimed at E grade maths.
A moron gets them wrong.

Also, DON'T FORGET UNITS.
how do you write cardiac output units? cm^3m^-1?

the units are annoying, why cant they be SI.
0
9 years ago
#4
Cm^3/min
1
9 years ago
#5
For microscopes..

Actual size=image size/magnification
Image size= actual size x magnification
Magnification= image size/actual size
0
9 years ago
#6
(Original post by Amyanne)
For microscopes..

Actual size=image size/magnification
Image size= actual size x magnification
Magnification= image size/actual size
is it in diopters?
0
9 years ago
#7
(Original post by sconter)
is it in diopters?
Overthinking much?

Image Size is in millimetres
Magnification has no measurement
Specimen size is in micrometres
1
9 years ago
#8
(Original post by Scienceisgood)
Overthinking much?

Image Size is in millimetres
Magnification has no measurement
Specimen size is in micrometres
most of my knowledge for this exam comes frm alevel chem, medical physics and gcse bio. so i havent had to learn much, but the units are all weird.
0
9 years ago
#9
If you are looking for the actual size, then you normally just X your answer by 100 to get the units for micrometer.
0
9 years ago
#10
(Original post by Scienceisgood)
Overthinking much?

Image Size is in millimetres
Magnification has no measurement
Specimen size is in micrometres
I thought it could be any size.
Usually you calculate it yourself, from KM to nm
ALL RELATIVE TO metres being 1!!
Kilometers = 1^3
Metres = 1
Millimeters (MM) = 1^-3
MicroM (odd q / u shape then an m for metres).. = 1^-6
NM = 1^-9

I personally remember and use it in exam, probs get u 2 or 5 marks in total if asked. perhaps 7-8 if asked alot of additional theory on wavelengths of light in optical microscopes compared to resolving power of Electron Beams used by Electron Microscopes.
Also possibly questioned on Electron Microscopes being in a vacuum, so no interference or interaction with the beam of electrons by any other elements during its use.

Good Luck biol bros.

edit: Wavelengths of light are RELATIVELY longer than Electron Beam wavelengths -> So, Resolving power (ability to tell the difference between 2 objects apart) (Resolution) in electron microscopes are better than in optical (light) microscopes. Although i'd personally look over the Resolving power definition in your nelson thornes book
0
9 years ago
#11

June 2011 unit 1 biology AQA
question: 4b

it comes with a table and some working out so you can go on the AQA website and look at the questionnnn

i wouldd reallyyy appreciateee the helpp
my exam is tomorrowww
thanksss xx
0
9 years ago
#12
(Original post by fatz_01)

June 2011 unit 1 biology AQA
question: 4b

it comes with a table and some working out so you can go on the AQA website and look at the questionnnn

i wouldd reallyyy appreciateee the helpp
my exam is tomorrowww
thanksss xx
6.5-2.3 = 4.2.

4.2/3 = 1.4. =)
0
6 years ago
#13
(Original post by Scienceisgood)
Stroke Volume
Magnification
Heart Rate
Cardiac Output
Percentage increase/decrease

Don't forget, all biology calculations are aimed at E grade maths.
A moron gets them wrong.

Also, DON'T FORGET UNITS.
Also pulmonary ventilation, only a moron gets that wrong, ********.
3
3 months ago
#14
I agree, they're very annoying. I'm just doing my AS Levels now and I'm so stressed
0
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