Topic test mark scheme .pdf
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Author: IMartin (CCHSG)
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Topic test mark scheme
1. Mitosis
AQA SAM paper 1H q9
21st century q12 sam
or 3.2 rounded. Allow 3.1 from adding up
Allow diploid for 2nd point
June 16 iGCSE Ib q11
2. Percentile charts Edexcel b1 SAM q2
AQA 2H SAM q5
3. AQA ppt
grow from parents;
by vegetative reproduction/asexual reproduction;
no sexual reproduction
from meristem cell ;
(2 marks)
4. June 2106 iGCSE IB q7
Allow agar
5. June 2013 iGCSE IB q13
(ii) bacillus thuringensis
(iii) b3 june 2016 Q6
6.
(d)
Human growth hormone gene removed from chromosome/genome with enzyme
7. – any 6 from the following points:
1. Different temperatures/range of temps/specified temps;
2. Use same species of bacteria/same bactera/same mass of bacteria/same amount of bacteria/same
number of bacteria;
3. Measure insulin produced;
4. Insulin – mass/concentration/volume;
5. Repeats needed/3 repeats;
6&7
Any 2 validity points of: Give bacteria the same nutrients/food/oxygen/same length of time/type of
fermenter/sterile conditions;
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