What was the magnification answer in biology paper 1? #tiktokpoll

What was the magnification answer in biology paper 1? #tiktokpoll

[sakinajussab]

The real volume was
The real radius was 125nm
The equation was volume divided by π×radius^2 where you use π as 3.14 and the image size was 4mm and you have to calculate magnification

[RedCapStuff]

Im pretty sure it was 8010 because i first found out the real length of the structure then i converted everything into metres. From here i uses the equation for magnification.
24, 500, 000nm^3 is volume
125nm is radius
And length of image was 4mm
The equation they gave us was i think
Volume/pi (which we had to use 3.14) x r^2

[The_Official_Cat_Baxter]

800 for combined trilogy
8010 for separate science biology

[blueIceblues]

The question:
The real volume of structure Y is 24, 500, 000 nm^3
The real radius of structure Y is 125 nm
Use the equation :
(real) Length = volume/π*radius^2
The image length of structure Y is 4mm. Calculate the magnification of structure Y.
Use π = 3.14

[rellamajder]

For combined science the question was about a sperm cell in a diagram like next to a ruler or something. One end of the cell said 20 and the other 50 (length of 30). 1 line on the diagram was equal to 1.5 micrometers. When you measured the cell with a ruler is was 35 millimetres. Please if you could work this out it would be so helpful!!!

[Y_Chen]

Hey Primrose! I just wanted to say that you predicted the biology practical right as it was on the potato rpa for osmosis

[Ssyd]

I didn't even know how to do the magnification question I'm so cooked and I even did foundation too :>)

[rawcopper]

I got like 8016. It all depends on how much you rounded. Anything around that with correct working ahould get you the mark.

[FatimaZara-Ifz_]

In igcse edexcel 1br, magnification diameter was given, and actual length was given, yup, so that was just conversion and division . Seriously, from the comments, i feel other students felt magnification question was way too tough and complicated. Ahhh, may I also know which board primorse is talking

[NestorScarratt]

I'll explain my calculation, image length was 3.6 cm, which in micro meters is 3600, when the actual size was 45 (1.5 x 30), 3600/45) you should get 80.

[iqrahussain]

Ok so theh gave an equation of
Volume/ ((radius squared)*pi) === length
And the vol was nm^3
The radius was 125nm
And that was the real length


The image length was 4 mm i think but when i coverted to nm it was definitely 4*10^ -6

What i did wrong was that i put the exact value of pi when the question said use 3.14 😢

[natashacallis]

Different questions on the different papers I think!

[AmirahO-du]

There was a structure made of two cylinders. The real volume was I think and the real radius was 125. The formula for the length of one cylinder was volume/(pi x radius^2) and the real length was 4mm. We had to find the magnification

[clf]

It was 8010 but i converted millimeters into micrometers instead of nanometers so i put 8.01. do you reckon thats 5/6?

[whereruneeb]

ok nvm basically if you rounded it to 0.0005 and then have it divide 4 you got 8000 but those who didn’t round it got 8010 I think both of us should have got the mark???? Or are you not supposed to round until the end ya rabb

[oliverblackhall]

The sperm was measured between 50 and 20 micro meters in the diagram so I thought it was 30 micro meters long. Then by measuring the image it was about 3.6cm so I converted the cm into micro meters and did image size over actual size and that gave 1200 magnification

[trvnded]

I got 4000.... I didn't know what small divisions on a ruler meant though so I assumed it meant every 5mm

[scarefolkmusic]

I got 8010 because I didn't round until the last step.

[Hellobarbar]

I got 8010 but chnaged to 810

It was converting nano meters to mm

[rehum]

I got 8014, cuz I used the actual pi instead of 3.14, so I do still get the 6 marks?