Cell division 4.1.2.1 and 2 Flashcards
1
Q
What is a chromosome?
A
A long coiled molecule of DNA divided up into regions called genes.
2
Q
Why do we need new cells?
A
Grow
Replace worn out cells
Repair damaged tissues
3
Q
What are the three stages of the cell cycle?
A
Interface
Mitosis
Cytokinesis
4
Q
What happens at interface-stage1?
A
Cell growth
Increase in number of organelles
DNA replicates
5
Q
What happens at mitosis-stage 2?
A
One set of chromosomes moves to each end of cell
Nucleus divides
6
Q
What happened at cytokinesis-stage 3?
A
The cytoplasm divides to form two genetically identical cells
7
Q
What is mitosis?
A
Making new cells that are genetically identical to the original cell
