- Messages
- 1,660
- Reaction score
- 8,584
- Points
- 523
Even i am not zarraand i am not humpty fgs
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
Even i am not zarraand i am not humpty fgs
zahir si baat ha :sPaper 1?
OTAY zarra u r not zarra. is it fine now zarhaEven i am not zarra
I do edexcel bachey....that is why i askedzahir si baat ha :s
OTAY zarra u r not zarra. is it fine now zarha
Oh Oh kay mujhe pata ni tha zarra auntyI do edexcel bachey....that is why i asked
Much better -_- thanks
calories/day i guessGuys is there any unit of basal metabolic rate?
calories/dayGuys is there any unit of basal metabolic rate?
The width of a cell membrane is 7nm.. that's the reason why we use electron microscope to see it clearly. The white blood cells diameter can't be in mm.. if it were so, we would not need a microscope to view them . As for the alveoli their diameter too is in micrometers since we need a large surface area to volume ratio for quick diffusion across the alveolar walls.. You must have read that the smaller the surface area, the larger surface area to volume ratio. Hope this makes senseView attachment 59128
Can someone please tell me why the answer is C?
Thanks, but they are asking about the cell wall(which is not 7nm)...and I didn't get the restThe width of a cell membrane is 7nm.. that's the reason why we use electron microscope to see it clearly. The white blood cells diameter can't be in mm.. if it were so, we would not need a microscope to view them . As for the alveoli their diameter too is in micrometers since we need a large surface area to volume ratio for quick diffusion across the alveolar walls.. You must have read that the smaller the surface area, the larger surface area to volume ratio. Hope this makes sense
The diameter of cell walls in different organisms is not the same.. for example in prokaryotes it's diameter ranges from 5 to 80 nm and in eukaryotes it's about 1000 to 5000 nm thick. (I actually searched for it).. What did not you get dear? Can you please specify?Thanks, but they are asking about the cell wall(which is not 7nm)...and I didn't get the rest
The average diameter of a eukaryotic cell is about 50 micrometers!Thanks, but they are asking about the cell wall(which is not 7nm)...and I didn't get the rest
Look, all the structures mentioned here in the MCQ can never be in mm because if they were in mm, you would have been able to see them with naked eye, but you aren't able to do so. So just eliminate all the options which quote 'mm' as the measuring unit. After elimination you'll notice that you're left with only option C.View attachment 59128
Can someone please tell me why the answer is C?
even if you dnt knw the exact lengthView attachment 59128
Can someone please tell me why the answer is C?
C is correct i think not sure,because A,B and D are wrong as we cannot see ribosome,Mitochondria and
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now