- Messages
- 110
- Reaction score
- 166
- Points
- 53
Hey guys could anyone give any tips on how really to prepare for these papers. I always feel that paper 1 is tricky, and I have practiced a lot and still lose lots of marks.
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)
Is it c? if it is i only measured the width of the cell membrane (from top pospholipid head to bot phospholipid head) and got 2 cm=20000000nm. You should know that cell membrane width is around 7-8nm and they even mention it. so mag=img/actual therefore mag= 20000000/8 = 2.5 x10 6.question 6, what could be possible answer and why?
Competitive inhibitors effect decreases by increasing substrate concentration. Thus the rate of reaction increaseshttp://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_s13_qp_13.pdf
Number 14.
The answer is C.
Explanation needed
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