# Guys I NEED help with this biology question

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#1
A student views a cheek cell through a microscope. Look at the photo support(a photo of a cheek cell)and th magnification scale=1cm=1µm
sheet to see what the student observed.
a Use the scale given to calculate the magnification.
b Deduce the size of a cheek cell.

I measured the cell and it was 3cm but I need the actual size to figure this out. How do I do ittt?
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1 month ago
#2
(Original post by Asheri2006)
A student views a cheek cell through a microscope. Look at the photo support(a photo of a cheek cell)and th magnification scale=1cm=1µm
sheet to see what the student observed.
a Use the scale given to calculate the magnification.
b Deduce the size of a cheek cell.

I measured the cell and it was 3cm but I need the actual size to figure this out. How do I do ittt?
Is there a scale bar on the photo?
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#3
Yes
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#4
(Original post by Asheri2006)
Yes
Wait, I take that back, the only thing that could help would be the key telling me that 1cm=10μm once measured
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#5
(Original post by Asheri2006)
Wait, I take that back, the only thing that could help would be the key telling me that 1cm=10μm once measured
How am i supposed to work out the actual size?
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1 month ago
#6
Well does that not mean its 30μm then?
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#7
(Original post by EmRep13)
Well does that not mean its 30μm then?
I think thats image size
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1 month ago
#8
(Original post by Asheri2006)
A student views a cheek cell through a microscope. Look at the photo support(a photo of a cheek cell)and th magnification scale=1cm=1µm
sheet to see what the student observed.
a Use the scale given to calculate the magnification.
b Deduce the size of a cheek cell.

I measured the cell and it was 3cm but I need the actual size to figure this out. How do I do ittt?
Heyy so basically dunno if this helps but hopefully will. Magnification = image size (on paper) / actual size
So if you measured the cell as 3cm on paper, then using the info : magnification scale=1cm=1µm, the actual size would be 3µm I think. Then you use the equation I gave. Sincere apologies if this method is wrong, I'm not the best at biology. Good luck!
0
1 month ago
#9
(Original post by Asheri2006)
A student views a cheek cell through a microscope. Look at the photo support(a photo of a cheek cell)and th magnification scale=1cm=1µm
sheet to see what the student observed.
a Use the scale given to calculate the magnification.
b Deduce the size of a cheek cell.

I measured the cell and it was 3cm but I need the actual size to figure this out. How do I do ittt?
use IAM
so it would be image = magnification times actual
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#10
(Original post by Donnialy)
Heyy so basically dunno if this helps but hopefully will. Magnification = image size (on paper) / actual size
So if you measured the cell as 3cm on paper, then using the info : magnification scale=1cm=1µm, the actual size would be 3µm I think. Then you use the equation I gave. Sincere apologies if this method is wrong, I'm not the best at biology. Good luck!
Sorry, the scale was 1cm=10μm so it may be 30, would it be 30 divided by 3? If you used IMA, sorry i'm just assuming the image size is 3cm so maybe the actual size would be 30μm?
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1 month ago
#11
(Original post by Asheri2006)
Sorry, the scale was 1cm=10μm so it may be 30, would it be 30 divided by 3? If you used IMA, sorry i'm just assuming the image size is 3cm so maybe the actual size would be 30μm?
I think yeh so if 1cm = 10μm, then 3cm = 30 μm. You gotta convert the cm to μm tho for image size, so you use same units when dividing. The conversion scale in the question was to find the actual size, right?
3 cm = 30000 μm (I think)
Magnification = Image size / Actual size
= 30000 / 30
M = x 1000

Again apologies if this is wrong and not explained well, im not good with word problems lol.
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#12
Thank you so much!
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1 month ago
#13
(Original post by Asheri2006)
Thank you so much!
Happy to help 👍
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