Cell division Flashcards
1
Q
Chromosomes definition
A
In normal body cells they are found in pairs
They carry a large number of genes
Made up o DNA
Found in the nucleus in animal and plant cells
2
Q
Cell cycle
A
They form two daughter cells
Mitosis is important for the growth and repair of cells for example the replacment of skin cells
Stage 1:
Cell grows bigger
DNA replicates (chromosomes are duplicated)
Increase the number of sub-cellular structures, such as ribsomes and mitochondria.
Stage 2 (mitosis)
A complete set of chromosomes is pulled to each end of the cell
The nucleus divides to form two nuclei
Stage 3:
Cytoplasm and cell membrane divide to form two identical daughter cells
3
Q
A
