The Cell Cycle Flashcards
genetics unit test
1
Q
why do somatic cells undergo cell division?
A
during the cell cycle, somatic cells (body cells) reproduce through controlled growth and division. it is growth, repair (damaged tissues and organs), replacement (dying or dead cells)
2
Q
key events during interphase (3)
A
- growth and metabolic activity
- DNA is replicated
- centrioles replicate, cells prepare for cell division
3
Q
key events during prophase (5)
A
- chromatin condenses into chromosomes
- two identical sister chromatids are joined together by centromere
- nuclear membrane breaks down
- centrioles move to opposite poles of the cell
- spindle fibres form
4
Q
key events during metaphase (1)
A
-the spindle fibres from centrioles line up the chromosomes along the equator
5
Q
key events during anaphase (2)
A
- centromeres split and sister chromatids break apart
- spindle fibres shorten and split chromosomes to opposite poles of the cell
6
Q
key events during telophase (3)
A
- chromosomes condense into chromatin
- nuclear membrane reforms
- spindle fibres break down and centriole reappear