MitosisCambridge IGCSE Biology: Flashcards
Card 1 of 100 of 10 known
Question
Define mitosis.
Tap or press Space to reveal
Tap card or press Space to flip
See all 10 cards
- Define mitosis.
- Nuclear division that gives rise to two genetically identical cells.
- What happens to chromosomes before mitosis begins?
- They undergo exact replication, so each chromosome consists of two identical copies.
- Does mitosis change the chromosome number of a cell?
- No — mitosis maintains the same chromosome number in each daughter cell as in the parent cell.
- Are the two daughter cells from mitosis genetically identical or different?
- Genetically identical.
- Name three roles of mitosis in an organism.
- Growth, repair of damaged tissue, and replacement of worn-out cells (also asexual reproduction).
- How is mitosis involved in asexual reproduction?
- Asexual reproduction produces genetically identical offspring, which are formed by mitosis.
- What is a stem cell?
- An unspecialised cell that divides by mitosis to produce daughter cells that can become specialised for specific functions.
- What does 'diploid' mean?
- A nucleus containing two sets of chromosomes.
- What does 'haploid' mean?
- A nucleus containing a single set of chromosomes.
- How does mitosis help repair a cut in the skin?
- It produces new, genetically identical skin cells to replace the damaged ones.