Cell Division & growth

• What does the nucleus contain?

  DNA
• What binds together in DNA?


  • A T

  •C G
• What forms chromosomes ?

  DNA wrapped tightly together
• What codes for a protein?

  Gene
• What is a gene?

  Length of DNA
• What does a gene cause?

  Phenotype (visible characteristic)
• What is mutation caused by?

  A faulty gene
• What can mutation lead to?


  Diseases
• Define genotype

  All of the genetic material of an organism
• What is the first step of mitosis?

  Prophase
• What is the second step of mitosis?

  Metaphase
• What is the third step of mitosis?

  Anaphase
• What is the fourth step of mitosis?

  Telophase
• What happens during Prophase?

  • Chromosomes condense and become visible

  • Nuclear membrane breaks down

  • Spindle fibres form.
• What happens during Metaphase?

  Chromosomes align in the middle of the cell
• What happens during Anaphase?

  • Chromosomes separate

  • Move to opposite poles of the cell.
• What happens during Telophase?

  2 nuclear membrane form
• What happens during Cytokenesis?

  • Cells split down the middle

  • Creates 2 DIPLOID daughter cells
• What is mitosis for?

  Growth and Repair
• What type of reproduction is mitosis?

  Asexual
• How many chromosomes are in diploid cell?

  46
• What is a stem cell?

  An undifferentiated cell with no function
• What do stem cells differentiate into?

  Specialised cells
• What are stem cells used for?

  Repair damaged tissue by replacing damage cell
• What can stem cells cure?

  Diseases