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#1
Can someone tell me how the answer is C appease in the attached below image
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#2
(Original post by Universecolors)
Can someone tell me how the answer is C appease in the attached below image
Attachment 751854
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3 years ago
#3
(Original post by Universecolors)
Attachment 751854
Ok so 4 eye piece units are equal to 1 stage micrometer unit so
4 EPU=0.1 mm=100 micrometres
so 1 EPU= 100/4=25 micrometres
I can't see the image clearly but it appears that the nucleus is approx 1 epu so 25
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#4
(Original post by maryam200pol)
Ok so 4 eye piece units are equal to 1 stage micrometer unit so
4 EPU=0.1 mm=100 micrometres
so 1 EPU= 100/4=25 micrometres
I can't see the image clearly but it appears that the nucleus is approx 1 epu so 25
Can you tell me where the nuclear is and how much it measures
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3 years ago
#5
(Original post by Universecolors)
Can you tell me where the nuclear is and how much it measures
i think its the darker circle between the 70-80 measurement
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#6
(Original post by Mowneeeeeek)
i think its the darker circle between the 70-80 measurement
That’s not a chloroplast ?
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3 years ago
#7
(Original post by Universecolors)
That’s not a chloroplast ?
dont quote me on this but i believe the smaller circles are the chloroplasts and the larger one is the nucleolus inside the nucleus
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#8
(Original post by Mowneeeeeek)
dont quote me on this but i believe the smaller circles are the chloroplasts and the larger one is the nucleolus inside the nucleus
Can you please explain how to solve it , I didn’t get it from the previous person who explained it
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3 years ago
#9
(Original post by Universecolors)
Can you please explain how to solve it , I didn’t get it from the previous person who explained it
sooo in the first circle the longer line is the stage measurements where 1 line is 0.1mm (100micrometers) and you can see that each side lines up with the 10-50 in eye piece units (which is covered on one page of the CGP bio rev guide) so thats 40 eye piece units are equal to 100micrometers. if the nucleus is that darker larger circle between 70-80 EPU and you measure it to be about the same by eye or with your ruler, given that its slanted, then youll find that 10 EPU is 1/4 of the larger 0.1mm line (100 micrometers remember). so divide the 100um by 4 and you get C) 25 um as your answer

hope that helps
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#10
(Original post by mowneeeeeek)
sooo in the first circle the longer line is the stage measuements where 1 line is 0.1mm (100micrometers) and you can see that each side lines up with the 10-50 in eye piece units (which is covered on one page of the cgp bio rev guide) so thats 40 eye piece units are equal to 100micrometers. If the nucleus is that darker larger circle between 70-80 epu and you measure it to be about the same by eye or with your ruler, given that its slanted, then youll find that 10 epu is 1/4 of the larger 0.1mm line (100 micrometers remember). So divide the 100um by 4 and you get c) 25 um as your answer

hope that helps
thank you
1
#11
(Original post by Mowneeeeeek)
sooo in the first circle the longer line is the stage measurements where 1 line is 0.1mm (100micrometers) and you can see that each side lines up with the 10-50 in eye piece units (which is covered on one page of the CGP bio rev guide) so thats 40 eye piece units are equal to 100micrometers. if the nucleus is that darker larger circle between 70-80 EPU and you measure it to be about the same by eye or with your ruler, given that its slanted, then youll find that 10 EPU is 1/4 of the larger 0.1mm line (100 micrometers remember). so divide the 100um by 4 and you get C) 25 um as your answer

hope that helps

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3 years ago
#12
weird, every picture of that question shows 400 magnification not 200 (and with those answers too) - in the case of it being x400 the answer is C but im not entirely sure about it with the magnification as x200 bc im p sure the anwer would be 5x10^-1 so?
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#13
(Original post by Mowneeeeeek)
weird, every picture of that question shows 400 magnification not 200 (and with those answers too) - in the case of it being x400 the answer is C but im not entirely sure about it with the magnification as x200 bc im p sure the anwer would be 5x10^-1 so?

And the mean I got respectively is
11
16
9.2
16
Why is it B and not D
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3 years ago
#14
if you could tell me why that other one was A id appreciate that ahaha

hmm genuinely i think all of the revision ive been doing has fried my brain BUT the only way i can make that make sense is if you dont include 8 in the mean calculation (idk? not including an anomaly or something??) - i got 18 but only if you remove 8 and as a result divide by 4 instead
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#15
(Original post by Mowneeeeeek)
if you could tell me why that other one was A id appreciate that ahaha

hmm genuinely i think all of the revision ive been doing has fried my brain BUT the only way i can make that make sense is if you dont include 8 in the mean calculation (idk? not including an anomaly or something??) - i got 18 but only if you remove 8 and as a result divide by 4 instead
What do u mean by taking out the result btw , I don’t understand , and I still haven’t solved the first one
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3 years ago
#16
okay so my teacher told us youre not supposed to remove anomalies but the only way i could get 18 as the mean for 2 is if i removed the 8 and did 19 + 19 + 16 +18 = 72 / 4 = 18

and with the chloroplast one, 4epu out of the total scale 40epu (where 40epu = 100um) is 1/10 so 1/10 x 100 (the conversion) is 10um - 10 in standard form is 1x10^1um which is A
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#17
(Original post by mowneeeeeek)
okay so my teacher told us youre not supposed to remove anomalies but the only way i could get 18 as the mean for 2 is if i removed the 8 and did 19 + 19 + 16 +18 = 72 / 4 = 18

and with the chloroplast one m = i/a right, 4epu out of the total scale 40epu (where 40epu = 100um) is 1/10 so 1/10 x 100 (the conversion) is 10um - 10 in standard form is 1x10^1um which is a
thank u very much !!
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