1. How many stages of cell division do you see in this image?
Onion Root Tip & Cell Cycle Lab
How many stages of cell division do you see in this image?

2. What are the key roles of cell division?
Cell Cycle Notes
What are the key roles of cell division?
Cell division functions in:
Reproduction for some organisms
Growth of an organism from a fertilized egg
Repair of cells that die from normal wear and tear or accidents
Cell division distributes identical sets of chromosomes to daughter cells

3. Cell Cycle Notes DNA molecules are packaged into . chromosomes
Human (body cells) have 46 chromosomes
Human (sperm or eggs) have 23 chromosomes
Chromosomes are made of a material called__________.
When chromatin tightly condenses in preparation for cell division, it is referred to as a chromosome.
chromosomes
somatic cells
gametes
chromatin.

4. Cell Cycle Notes
Chromatin is composed of DNA and proteins. Chromatin is the “relaxed” or “unwound” form of our genetic material that is present during most of a cell’s life.
DNA is supercoiled around proteins called histones.
Together the DNA and histone proteins form bead-like structures called nucleosomes
DNA + 8 histone proteins = a nucleosome

7. Mitosis Notes
The chromosome is duplicated during ___ in _____________.
Each duplicated chromosome consists
of two .
These are connected by a . S
interphase
sister
chromatids
centromere

8. What is the difference between interphase, mitosis, and cytokinesis?

9. Mitosis (M Phase) Prophase Metaphase Anaphase Telophase
The M Phase consists of:
Mitosis and Cytokinesis
Four Stages of Mitosis:
Prophase
Metaphase
Anaphase
Telophase

10. RE-identify the stages of Mitosis