3.12 - Mitosis Flashcards
The importance of mitosis in living organisms The stages of mitosis The process of cytokinesis How uncontrolled cell division can lead to cancer
What two processes occur after interphase?
Mitosis and cytokinesis
What is mitosis?
Division of the nucleus
What is cytokinesis?
Division of the whole cell and cytoplasm
What is the importance of mitosis?
Produces two genetically identical daughter cells
What processes use mitosis in multicellular organisms?
Growth
What are the four stages of mitosis?
Prophase
What happens during prophase?
Chromosomes condense
What happens during metaphase?
Chromosomes line up at the equator
What happens during anaphase?
Centromeres divide
What happens during telophase?
Chromatids uncoil
What happens during cytokinesis?
Cytoplasm divides to produce two daughter cells
What can mutations in genes controlling the cell cycle lead to?
Uncontrolled cell division and tumours
When do tumours become cancerous?
When they invade neighbouring tissues
How do some cancer treatments disrupt cell division?
By targeting specific stages of the cell cycle
What stages do cancer drugs target?
S phase and metaphase
What is the issue with cancer drugs?
They also disrupt the cell cycle of healthy cells
Why are tumour cells more likely to be damaged by cancer drugs?
They divide at a faster rate
