How to use this organizer:
- Type the answers to each question or statement in the space provided.
- When you are done, remove/delete all of the words in blue and between the * *.
- Proof-read your work and rewrite the sentences as needed to make them flow better.
- Before you print your paper, make sure you have condensed it all to 1 – 3 pages.
*Onion Root Tip Mini-Formal Lab Organizer*
*Title:*
.
Hypothesis:
*Be sure to include both hypotheses, each with support*
Results: You should hand in your worksheet to avoid needing to make a data table and to
share your results of the microscope practical.
*Your lab report needs 1 data table
____ a data table of your cell counts and percentage calculations – including title
* check that your data table has a complete title
Your lab report needs two graphs.
____ a bar graph comparing # cells in each phase of the cell cycle
____ a pie chart comparing % cells in each phase of the cell cycle
** check your graphs for
Bar
__ title
__ axes labeled
__ caption
Pie chart
___ title
___ % included
___ caption
** Be sure you have completed the microscope practical where you identify the phases of the
cells at each microscope station. *
Conclusion:
*Your conclusion should have 3 paragraphs.
Data Analysis:*
*Restate both of your hypotheses.*
*Analyze your data and determine which phase of the cell cycle was longest and which
phase of mitosis was longest. Use data to prove whether each hypothesis was
supported!!*
*Compare the total % of cells spent in interphase versus mitosis. Explain why cells
spend more time in interphase than mitosis.*
*Explain why onion root tips are a good region of the plant to find cells undergoing
mitosis. *
*Assume you were not able to observe cells in every phase of mitosis. Explain why this
might happen.*
*Connections to Biology:*
*Identify at least 2 types of cells in the human body that would actively perform mitosis.
(hint: think about where in your body cells are enduring harsh conditions or active
growth!)*
*Some cells don’t reproduce (undergo mitosis) at all. Name 2 cell types in the human
body that don’t perform mitosis.*
*Tumors are groups of cells that cannot control the cell cycle. Which phase of the cell
cycle do these cells get ‘stuck’ in?*
*Compare and contrast animal and plant cells with regard to both structure and what is
happening during telophase/cytokinesis. *
*Sources of Error and Future Experiments:*
*Describe at least one source of error that took place during the experiment.*
*Describe at least one additional experiment that we could perform to help us better
understand mitosis and the cell cycle.*
Bibliography:
*You must cite at least your textbook and the website we used to categorize the cells. You may
use a program to help your write it (ex. Noodle Tools), check pg 66-67 in your assignment book,
or come by to see me and I will help you!*