NOTES: Italics indicates NOT from the mark scheme (often means no
mark schemes relating to the spec point). These are taken instead
from the CIE A Level textbook, which occasionally includes extra
detail to help my own understanding. All others are directly copied
from CIE 9700 mark schemes.
Mark scheme abbreviations: I = ignore, A = accept, R = reject. A
semi-colon “;” separates marking points, which are sometimes
numbered. “AVP” = any valid point. See the start of any mark
scheme for full abbreviations.
Numbers before the heading of a note indicate the specification
reference.
For example: Topic 2, “7 – molecular structure of polysaccharides…”
refers to specification point 2.7)
5. The mitotic cell cycle.
Replication and division
1 – chromosome structure:
2 - Roles of mitosis:
growth by increase in cell number
1 maintaining (same) number of chromosomes ;
2 ensuring genetic stability / maintaining(/producing) genetically
identical cells /AW ;
3 asexual reproduction ;
A vegetative reproduction/cloning
4 cloning/ clonal expansion, of (named) lymphocytes ;
A B/T cells
mark schemes relating to the spec point). These are taken instead
from the CIE A Level textbook, which occasionally includes extra
detail to help my own understanding. All others are directly copied
from CIE 9700 mark schemes.
Mark scheme abbreviations: I = ignore, A = accept, R = reject. A
semi-colon “;” separates marking points, which are sometimes
numbered. “AVP” = any valid point. See the start of any mark
scheme for full abbreviations.
Numbers before the heading of a note indicate the specification
reference.
For example: Topic 2, “7 – molecular structure of polysaccharides…”
refers to specification point 2.7)
5. The mitotic cell cycle.
Replication and division
1 – chromosome structure:
2 - Roles of mitosis:
growth by increase in cell number
1 maintaining (same) number of chromosomes ;
2 ensuring genetic stability / maintaining(/producing) genetically
identical cells /AW ;
3 asexual reproduction ;
A vegetative reproduction/cloning
4 cloning/ clonal expansion, of (named) lymphocytes ;
A B/T cells
