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2.1 Supplying the cell

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Question 18

A newly formed cell in a species of flowering plant contains 30 chromosomes.

This cell was produced from one parent cell by mitosis.

How many chromosomes were in the parent cell at the start of the cell cycle?

[1]
A

606060

B

120120120

C

151515

D

303030

Markscheme

2.1 Supplying the cell Questions

  1. GCSE
  2. /Biology
  3. /2.1 Supplying the cell

194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.

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