How did your Biology Paper 12 go?

[aneeq247]

Resolution is the ability to differentiate between two objects. In the MJ13 question we had to pick the option that showed how the specimen would look at x400 magnification when viewed with a light microscope. The answer was C according to the marking scheme, and in option C the image was blurry, meaning that at x400 the light microscope begins to get unclear, so i believe the answer is x400 for this paper as well. If im not mistaken they asked at what magnification the light microscope would be unsuitable to use, and the light microscope begins to get blurry at x400. But then again I could be wrong. Just my two cents.

 

[Princess Raven]

Resolution is the ability to differentiate between two objects. In the MJ13 question we had to pick the option that showed how the specimen would look at x400 magnification when viewed with a light microscope. The answer was C according to the marking scheme, and in option C the image was blurry, meaning that at x400 the light microscope begins to get unclear, so i believe the answer is x400 for this paper as well. If im not mistaken they asked at what magnification the light microscope would be unsuitable to use, and the light microscope begins to get blurry at x400. But then again I could be wrong. Just my two cents.

Um where does it say the image was blurry in mj13.. And yes it does..it says if we magnify further than 1500 we won't be able to see it coz it has reached it's limit of resolution. But hey no one really knows the answer so let's just stop arguing on something we both aren't sure of.

 

[aneeq247]

Um where does it say the image was blurry in mj13.. And yes it does..it says if we magnify further than 1500 we won't be able to see it coz it has reached it's limit of resolution. But hey no one really knows the answer so let's just stop arguing on something we both aren't sure of.

It does not say that the image was blurry, but the answer was C. Take a look at option C and youll see that the image is really blurry. But yeah arguing wont bring back lost marks. Lets just hope and pray for the best. InshAllah everyone will get As and A*s

 

[aneeq247]

By the way I searched on google and according to some sources light microscopes can magnify specimens up to x1000 but they become unclear. (Source : scienceprofonline.com)

 

[Princess Raven]

Well I searched on Wikipedia and it also says 1500.. And in our biology books it says 1500

 

[aneeq247]

http://bioserv.fiu.edu/~walterm/human_online/microscope_index/micro_text/microscopy.htm ( This too states that after x1000 the microscope is no longer clear)

 

[aneeq247]

http://www.microscopy-uk.org.uk/mag/artdec05/muessay2.html (And this)

Lol I hope there are two acceptable answers for this one.

 

[Mustafa Malik]

I think for the cellulose it shud be both insoluble and hydrogen bonds cuz if it was soluble then it won't act as a structural component

 

[aneeq247]

I think for the cellulose it shud be both insoluble and hydrogen bonds cuz if it was soluble then it won't act as a structural component

Was there an answer choice which included both insoluble and hydrogen bonds?

 

[Princess Raven]

http://www.microscopy-uk.org.uk/mag/artdec05/muessay2.html (And this)

Lol I hope there are two acceptable answers for this one.

How can there be two acceptable answers??! It's an mcq question.. -.- and do u have the biology text book written by mary jones it says clearly in there that it's 1500

 

[aneeq247]

Oh well, one proven wrong answer wont hurt. still hoping the rest are correct

 

[aneeq247]

I don't understand how it can be x400 either. Q2 was a diagram of an image at x400 magnification (with an LM) and everything was clearly visible. Unless Cambridge openly contradicts itself, that can't be the answer.

Q2 was about a stage micrometer bro, of course it was clear.

 

[dumb human]

If I got 42 in paper 2 and 30 in paper 1, can I still score a?

OFCOURS YOU GOT A STRAIGHTTTTTTTTTTTTT DAMN A =D

 

[Muhammad Haris Ghani]

The answer for the first question was C (x400). The question was similar to the one asked in the paper of June 13 Variant 12 (question no 1).

Let make you sure bro it was a light microscope at x400 the boundaries are visible the was A x100

 

[Muhammad Haris Ghani]

OFCOURS YOU GOT A STRAIGHTTTTTTTTTTTTT DAMN A =D

are you there?

 

[aneeq247]

Let make you sure bro it was a light microscope at x400 the boundaries are visible the was A x100

No use in arguing man, just pray for the best.

 

[Muhammad Haris Ghani]

No use in arguing man, just pray for the best.

would you like to discuss more bcz I want

 

[Muhammad Haris Ghani]

No use in arguing man, just pray for the best.

what is discuss more mcqs

 

[dumb human]

are you there?

me? yess =)

 

[Muhammad Haris Ghani]

me? yess =)

wana discuss p12 bio?