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Mitosis Online Activities
All links to these activities can be found at:
Name__________________
Date___________________
http://fearing.wikispaces.com
Advanced Biology
Chapter 6
Onion Root Tip Lab
Procedure:
1. Carefully read the first page and view the motion animation to see that Mitosis
is a very fluid process.
2. Click next and skim through the mitosis phases and illustrations. Click Next.
3. Read “The Assignment” and continue according to the directions, adding tally
marks in the table below as you go.
4. When you have finished identifying each phase, CALCULATE the percent of
cells you found in each phase by dividing the number of cells in that phase by
the total cells observed.
INTERPHASE
PROPHASE
METAPHASE
ANAPHASE
TELOPHASE
NUMBER
OF
CELLS
PERCENT
OF ALL
CELLS
TOTAL
36
100%
*To calculate the %, get a total of ALL the cells and divide the number of cells in each phase by the total. Multiply
answer by 100 to get a percentage.
Analysis:
Total time for mitosis in onion cells at room temperature is about 85 minutes. Interphase
typically lasts 12-15 hours for cell growth and normal functions.
1. Which phase did you find most often? Which did you observe least often?
2. Since mitosis is a very fluid process it stands to reason the phases we see most
often must take longer to pass through and the phases we see least must be very fast
phases. Calculate the estimated time for each phase by multiplying each % (in
decimal form) by 85 minutes (the total time for mitosis).
Interphase Prophase
Estimated
length of
phase
(minutes)
Metaphase Anaphase
Telophase Time
85
minutes
3. Which phase seems to take the longest? Why do you think this might be?
4. Which phase was the fastest?
5. Why was using cells from the root tip of an onion a good place to find cells in
various phases of mitosis?
Cell Cycle and Mitosis Tutorial
Complete the cell cycle and mitosis tutorial problems 1 – 11, record you ANSWERS only
on a separate sheet of paper and staple to this sheet.
Mitosis Animation
Watch the Mitosis Animation. Record the summary statement displayed after the
animation in the space provided below.
Mitosis Practice Quiz
Take the quiz and PRINT out your quiz results – staple them to this sheet.
SHOW YOUR TEACHER THE COMPLETED PACKET BEFORE YOU LEAVE