4.6 Flashcards
What will we learn?
1. What is the role of interphase?
2. What occurs during interphase?
3. What is the role of mitosis?
4. What occurs during mitosis?
5. What is the role of cytokinesis?
- The role of interphase is to allow newly divided cells opportunity to grow, maintain normal cell function, and prepare for division.
- During interphase cells grow, replicate DNA, and prepare for division.
- Mitosis plays a role in growth, tissue repair, and asexual reproduction.
- During mitosis genetic information is transferred.
- Cytokinesis ensures equal distribution of cytoplasm to daughter cells.
What is the cell cycle?
It’s a highly regulated series of events for the growth and repair of cells
What are the two highly regulated processes of the cell cycle?
- Interphase
Growth and preparation - M-Phase
Mitosis - Division of the nucleus
Cytokinesis - Division of the cytoplasm
What makes up interphase?
- Interphase involves three sequential stages
G1 - cell growth
S - copies of DNA are made
G2 - the cytoplasmic components are doubled in preparation for division
What does mitosis play a role in?
Growth, tissue repair, and asexual reproduction
What does mitosis ensure the transfer of in terms of genetics?
The transfer of a complete genome from a parent cell to two genetically identical daughter cells
What are the two processes that alternate in the cell cycle?
Interphase and mitosis
What is the process of mitosis made up of?
Mitosis occurs in a sequential series of steps (prophase, metaphase, anaphase, telophase)
What is telophase followed by in mitosis?
Cytokinesis
What does cytokinesis ensure?
It ensures the even distrubution of cytoplasm between the cells
What is the G0 phase?
It’s a phase in which the cell does not divide anymore
A cell can reenter cell division with appropriate signals
What’s special about nondiving cells?
They may exit the cell cycle or be held at a particular phase
