The Cell Cycle
What are the two main phases of the cell cycle?
Interphase and M-phase
What is the first stage of mitosis?
Prophase
What is the smallest unit of life?
A cell
What is the purpose of mitosis in your body?
To grow and replace damaged cells
What tool do scientists use to view cells?
A microscope
What happens to the DNA during the S phase?
It is replicated
In what stage are chromosomes split apart?
Anaphase
What part of the cell contains DNA?
The nucleus
What is it called when a cell splits into two new cells?
Cell division
Why do we use microscopes in science class?
To see things too small for our eyes, like cells dividing
What is the M-phase responsible for?
Cell division
During which stage do chromosomes line up in the center of the cell?
Metaphase
What is DNA’s role in the cell?
It contains all of the blueprints and instructions for the cell.
Are the new cells the same or different from the original one?
The same (identical)
What part of the onion do we look at to see cells growing?
The root tip
During which phase does the cell grow and perform normal functions?
G1 phase
What disappears during prophase to allow the chromosomes to move?
The nucleus's outer membrane
What type of cells have a nucleus: prokaryotic or eukaryotic?
Eukaryotic
Why does your body make new cells?
To help you grow and heal
What happens to the DNA before the cell splits?
It makes a copy of itself
What would happen if a cell skipped the S phase?
It would not have enough DNA to divide properly
What stage comes immediately after telophase?
Cytokinesis
What would happen if a cell lost control of its cycle?
It could lead to uncontrolled growth, like cancer
What happens if a cell doesn’t divide the right way?
It might not work properly or make mistakes
How many new cells are made when one cell finishes dividing?
Two