- Messages
- 325
- Reaction score
- 215
- Points
- 53
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w10_qp_12.pdf
qns 1
qns 4
qns 16 why the ans not c
qns 27 is statement 4 correct?
qns 35
1. Option A is unnecessary because the xylem is measured in millimetres, not micrometres. Option 2 is unnecessary too because 4 tells you that the eyepiece graticule is already calibrated.
4. All you have to do is cross multiply. If 1.5x(10^1) micrometers = 1 cell, then 1x(10^-4) micrometres will = x cells. Take care of the units.
16. DNA replication occurs during interphase, which is not part of nuclear division.
27. Water does move out of cell 3, but it doesn't move out so much as to plasmolyse it. The difference is water potential between cell 3 and the surroundings is very slight.
35. For a person to have absorbed the most O2, he must have had the highest breathing rate, the largest tidal volume and the largest total lung volume. Multiply the 3 columns.