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CAIE IGCSE Biology 17.2.1 Defining Mitosis

Practise describing mitosis as nuclear division that produces genetically identical cells with chromosome number maintained.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • define mitosis as nuclear division producing genetically identical daughter cells
  • show that replicated chromosome copies separate equally between daughter nuclei
  • confirm from diagrams that chromosome number is maintained rather than halved

17.2.1—Mitosis as nuclear division giving question 1

[Maximum number: 1]

Penicillin is an antibiotic produced by the fungus Penicillium chrysogenum.

Fig. 5.1 shows the process used to produce penicillin.

Fig. 5.1 shows the process used to produce penicillin.

Fig. 5.2 shows the mass of fungus and the yield of penicillin during the fermentation process.

Fig. 5.2

Fig. 5.2

As the fungus grows in the fermenter, the nuclei in the fungal hyphae divide.

State the type of nuclear division that occurs during the growth of the fungus in the fermenter.

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