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AQASpec 4.1.2Foundation & Higher~30 min

Cell Division

Biology · Topic revision workspace

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Read the notes, score 80% and know 75% of the cards.

Topic overview

What you need to know

Cell Division is a key part of GCSE Biology. Connect structures to their functions and explain biological processes as clear causal sequences. Cell division that produces two genetically identical daughter cells. Used for growth, repair, and asexual reproduction. Cell division that produces four genetically different haploid gametes (sex cells). Involves two divisions. A thread-like structure of coiled DNA found in the nucleus. Humans have 23 pairs (46 total).

Exam tip

Use precise scientific vocabulary and make each link in an explanation explicit.

Revision notes

Core ideas

Secure these ideas first. Say each definition in your own words, then connect it to the topic overview.

  • Mitosis: Cell division that produces two genetically identical daughter cells. Used for growth, repair, and asexual reproduction.
  • Meiosis: Cell division that produces four genetically different haploid gametes (sex cells). Involves two divisions.
  • Chromosome: A thread-like structure of coiled DNA found in the nucleus. Humans have 23 pairs (46 total).
  • DNA: Deoxyribonucleic acid — a double helix polymer that carries the genetic code for making proteins.

Revision notes

Apply it in the exam

The exam will rarely ask for an isolated definition. Practise selecting the right idea and using it as part of a complete explanation or method.

  • Gene: A short section of DNA on a chromosome that codes for a specific protein.
  • Stem Cell: An undifferentiated cell that can divide and develop into different types of specialised cells.
  • Differentiation: The process by which a cell becomes specialised for a particular function.
  • Cell Cycle: The series of stages a cell goes through: growth (G1), DNA replication (S), more growth (G2), and mitosis (M).

Core knowledge

Key facts for Cell Division

1

Mitosis

Cell division that produces two genetically identical daughter cells. Used for growth, repair, and asexual reproduction.

2

Meiosis

Cell division that produces four genetically different haploid gametes (sex cells). Involves two divisions.

3

Chromosome

A thread-like structure of coiled DNA found in the nucleus. Humans have 23 pairs (46 total).

4

DNA

Deoxyribonucleic acid — a double helix polymer that carries the genetic code for making proteins.

5

Gene

A short section of DNA on a chromosome that codes for a specific protein.

6

Stem Cell

An undifferentiated cell that can divide and develop into different types of specialised cells.

7

Differentiation

The process by which a cell becomes specialised for a particular function.

8

Cell Cycle

The series of stages a cell goes through: growth (G1), DNA replication (S), more growth (G2), and mitosis (M).

Active recall

Close the notes and answer these

  1. 1.Without looking, explain mitosis and give one example or consequence.
  2. 2.Without looking, explain meiosis and give one example or consequence.
  3. 3.Without looking, explain chromosome and give one example or consequence.
  4. 4.Without looking, explain dna and give one example or consequence.

Content reviewed 23 July 2026 against the current linked specification.

Finished learning?

Mark the notes complete, then test what you can recall.

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