Cell Cycle Flashcards
What are the four phases of the cell cycle
G1, S, G2, M
G1 stands for what
Growth 1
S stands for what
Synthesis
G2 stands for what
Growth 2
M phase is split into what two parts
Mitosis and Cytokinesis
A cell during growth 1 performs…
Normal functions
What happens to a cell at the end of growth 1?
It increases in size, but the nucleus stays the same
After growth 1, what does the cell go through and why?
Checkpoint #1 ; Its health is checked to make sure it can go to the next phase, if it isn’t healthy enough, the cell is exterminated
What happens inside a cell during synthesis?
DNA is copied
Why is synthesis the most dangerous phase of the cell cycle?
The most exact calculations are made during this phase, so there are more possibilities for there to be an error in this phase
After synthesis, what does the cell go through
Checkpoint #2
What does the cell go through during growth #2?
It doubles its organelles.
What organelles are doubled during growth #2
ER, golgi body, lysosomes, mitochondria, and ribosomes
What does the cell go through at the end of interphase
Checkpoint #3
M phase is divided into five different parts, how are phases 1-4 different from phase 5?
Phase 1-4 is the division of the nucleus while phase 5 is the division of the cytoplasm
Cytokinesis isn’t part of ______ but is part of ______.
Mitosis ; M phase
How much of the cell cycle is made up of interphase and m phase
Interphase - 90%
M Phase - 10%
DNA is made up of what
Chromotin
What form of DNA is used only during mitosis
Chromotid
What is cytokinesis
The splitting of cytoplasm during the m phase
The stomach lining lasts
2-3 days
The stomach outside lasts for
16 years
The brain lasts for
50 years
What are the different phases of mitosis
Prophase, metaphase, anaphase, and telophase
