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AQA EXAM PAST PAPER QUESTIONS ANSWERS A LEVEL BIOLOGY- THE CELL CYCLE INCLUDING MITOSIS ANSWERS

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This document provides the answers to the 27 past paper questions on the cell cycle including mitosis.

Institution
AQA
Course
Unit 2 - Cells

Content preview

AQA
A-Level
BIOLOGY
3.2a Cells
2.5-2.7 | The Cell Cycle including Mitosis

Time allowed
38 minutes

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/32 %
4.1 | CELL BIOLOGY | QUESTION PAPER 1 1

, .(a) Variable that is changed;
Reject ‘the variable that changes’.
1




(b) 1. Idea of a confounding variable;

2. (So) genetically similar;
2. Do not accept ‘genetically identical / same DNA’.

3. (So) have similar salt tolerance / response to salt water / response to
watering treatment;

4. (So) have similar yield / mass of seeds;
Do not accept ‘amount / number of seeds’ or ‘growth rate’.
2 max




(c) Mitosis;
Ignore cell division
1




(d) 1. Irrigation with sea water / C / D increased yield compared with no
irrigation / A;
For ‘yield’ accept ‘mass of seed’ throughout.

2. Yield was lower when irrigated with sea water / C / D compared with
fresh water / B;
Only penalise once for use of ‘amount / number of seeds’.
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Study Level
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Examinator
AQA
Subject
A Level Biology
Unit
Unit 2 - Cells
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Uploaded on
April 13, 2022
Number of pages
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Written in
2021/2022
Type
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Contains
Questions & answers

Subjects

  • a level biology
  • aqa
  • past paper questions
  • exam questions
  • cells
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