CELL CYCLE
PRESENTED BY:
REBECCA BALKCOM
I N T R O D U C T I O N TO M I TO S I S
STANDARDS
• Next Generation Science Standards:
– Scientific & Engineering Practices
• Developing and using models
• Analyzing and interpreting data
• Obtaining, evaluating, and communicating information
– Crosscutting Concepts
• Patterns
– Disciplinary Core Ideas
• Life Sciences
– LS 3: Heredity: Inheritance and variation of traits
• Current ALCOS: #6 Define the roles of mitotic & meiotic divisions during reproduction, growth and repair of cells.
• Proposed new ALCOS: #4 Develop and use models to explain the role of mitotic cellular division in the growth and
repair of cells within multicellular organisms.
CELL CYCLE LAB ROTATION
• This lab is designed to introduce students to mitosis.
– Introduces students to terminology used with cell reproduction.
(chromosomes, chromatids, chromatin, centrioles and spindles fibers)
– Identify each stage of the cell cycle using drawings and real microscope
images.
– Calculate the amount of time the cell spends in each phase.
• Sample Daily Notes
• Mitosis is a form of cell reproduction where the cell goes through a
nuclear division to produce 2 identical diploid cells (2n). 2n2n. This
occurs in your somatic cells or body cells. It makes exact copies.
STATION 1 - LOOK AT THE CHART AND
DESCRIBE WHAT IS HAPPENING IN EACH
PICTURE.
A
G
Letter
Description
A
B
B
C
F
D
E
F
C
E
D
STATION 2 – SORT OUT THE FOLLOWING IMAGES
INTO THE FOLLOWING CATEGORIES: INTERPHASE,
PROPHASE, METAPHASE, ANAPHASE,TELOPHASE AND
CYTOKINESIS.
Phase
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
# of Pictures
STATION 3 – IDENTIFY THE PARTS OF
THE CELL THAT ARE LABELED IN THE
PICTURE:
STATION 4 – IDENTIFY THE STAGES
PRESENT IN THIS IMAGE.
STATION 5 – SORT THE PARTS BELOW INTO
GROUPS USING THE LABELS PROVIDED AND
GIVE A COUNT ON YOUR LAB REPORT.
Cell Part
Chromatid
Chromosomes
Centrioles
Spindle Fibers
Chromatin
# of Pictures
STATION 6 – DETERMINE THE PERCENTAGE OF TIME
EACH CELL WILL SPEND IN EACH STAGE OF MITOSIS.
DIVIDE THE NUMBER OF EACH CELL BY THE TOTAL
NUMBER OF CELLS AND MULTIPLY BY 100 TO
DETERMINE THE PERCENTAGE. PLACE THESE VALUES IN
THE CHART BELOW.
*Students can make a bar or pie chart to present the data
STATION 7 – PUT THESE IMAGES IN THE
ORDER IN WHICH THEY OCCUR. RECORD
THE INFORMATION ON YOUR LAB SHEET
USING THE TABLE BELOW.
Group Order of Pictures
1
2
3
4
ANALYSIS QUESTIONS
1. How did you determine between chromosomes, chromatids and
chromatins?
2. In which two phases are chromosomes present?
3. Which phase of the cell cycle do your cells spend the most time?
4. What patterns or trends did you notice that occurred during the
cell cycle?
5. How is interphase and cytokinesis similar and different?