Chapter 20 - The Cell Cycle Flashcards
Another word for cell division
prolferation
Homeostasis
Stable system mantenace
In what phase does all cells spend the vast majority of their lives?
Interphase
What happens during interphase?
Cellular growth and DNA synthesis
G1 phase
- Growth phase and preparation time for DNA synthesis of S phase.
- RNA and protein synthesis also takes plase
- Organelles and inracellular structures are duplicated
- The cell grows during this phase
Which cells are permanently in G1 phase?
Mature cells
The restriction point:
- Located in the G1 phase.
- If passed it will commit a cell to continue into DNA synthesis within the S phase
At what phase does the DNA replication occure?
S phase
G2 phase:
- time of preparation for the nuclear division for mitosis.
- Also contains a checkpoint where the intracellular regulatory molecules assess nuclear integrity
What is a cenromere for?
It connects two chromatids
In what phase is the kinetochore formed?
In the prophase
What is formed in the prophase?
- Mitotic spindle
- Centrosomes
- Kinetochores
In what phase is the nuclear envelope disassembled?
Prometaphase
What happens in the metaphase?
The aligned chromatids forms metaphase plate ( they MEET in METaphase😉)
What happens in anaphase?
Sister chromatids migrate towards opposite poles
