>
Read It!
#1
Write the complete answer to the question.
Read It!
Write the complete answer to the question.
#2
The phase(s) of the cell cycle include(s):
A. Only interphase
B. Interphase and mitosis
C. Prophase, metaphase, anaphase, and telophase
D. Mitosis and meiosis
During which phase of the cell cycle are cells
preparing to divide?
A. Telophase
B. Anaphase
C. Prophase
D. Metaphase
Read It!
Read It!
#3
Write the complete answer to the question.
During ____________, the chromosomes align in
the middle of the cell and during ______________,
they are pulled away to opposite ends of the cell.
A. prophase, telophase
B. anaphase, metaphase
C. telophase, prophase
D. metaphase, anaphase
#4
Write the complete answer to the question.
The cell spends most of its time in this phase,
resting and making sure it has enough nutrients for
another round of cell division.
A. Prophase
B. Mitosis
C. Interphase
D. Anaphase
Read It!
Cell Cycle and Mitosis
Eventually cells need to duplicate. There are two main methods of replication, mitosis and meiosis.
Today, the focus is on mitosis.
The big idea to remember is that mitosis is the simple duplication of a cell and all of its parts. It duplicates
its DNA and the two new cells (daughter cells) have the same pieces and genetic code. Two identical
copies come from one original. Start with one; get two that are the same. You get the idea.
Beyond the idea that two identical cells are created, there are certain steps in the process. There are five (5) basic phases in
the cell cycle. You should remember the term PMATI (pronounced PeeMahtEee). PMATI is the acronym for the phases of the
cell cycle. The cell cycle includes mitosis and interphase. Using the acronym, hopefully you will remember the phases:
PROPHASE - METAPHASE - ANAPHASE - TELOPHASE – INTERPHASE
The Phases of Mitosis
Prophase: A cell gets the idea that it is time to divide. First, it has to get everything ready. It needs to duplicate DNA, get
certain pieces in the right position (that’s when centrioles are important), and generally prepare the cell for the process of
mitotic division.
Metaphase: Now all of the pieces are aligning themselves for the big split. The DNA lines up the middle of the cell and the
centrioles send out specialized tubules that connect to the DNA. The DNA (chromatin) has now condensed into
chromosomes. Two strands of a chromosome are connected at the center with something called a centromere. The tubules
actually connect to the centromere, not the DNA.
Anaphase: Here we go! The separation begins. Half of the chromosomes (sister chromatids) are pulled away to one side of
the cell; half of the chromosomes (sister chromatids) go the other way. When they get to the sides of the cell, it's time to
move on to telophase.
Telophase: Now the division is finishing up. This is the time when the cell membrane closes in and splits the cell into two
pieces. The end result is two separate, identical cells.
Interphase: This is the normal state of a cell. When it comes to cell division, this phase could be called the resting state. It's
just going about its daily business of surviving, growing, copying DNA, and making sure it has all of the nutrients and energy
it needs. It is also getting ready for another division that will happen one day, when needed. It is preparing, so when it's time
for prophase again, all the pieces are there.
Watch It!
#1
Teacher’s Pet
Cell Cycle
1. Click play on the video.
2. Answer questions from cards
#2-7 on your lab sheet.
3. Use complete sentences or TTQA.
Watch It!
#3
In order for DNA to be copied
accurately, which type of structure
does it tightly coil into?
Diagram and label the basic
structure of the chromosome.
Watch It!
#2
What is cell division? Why do
cells need to divide?
Watch It!
#4
Describe the difference between
diploid and haploid cells. Give an
example of each.
Watch It!
#5
Which processes make up the
cell cycle? In which process does
a cell spend most of its time?
Watch It!
#7
Describe mitosis and cytokinesis.
Watch It!
#6
List and describe the 3 processes of
interphase.
Watch It!
#8
Research It!
#1
The Cell Cycle & Mitosis
Research It!
#2
Use complete sentences or TTQA.
Prophase
1. Use the tutorial to describe each
phase of mitosis.
2. Write in complete sentences or TTQA.
Research It!
#3
1. Summarize what is happening to the
chromosomes, nucleolus, and
centrioles during prophase. Add
information about the nuclear
membrane (from the prometaphase
section.
Research It!
Use complete sentences or TTQA.
Metaphase
Describe the alignment of the
chromosomes during metaphase.
#4
Use complete sentences or TTQA.
Anaphase
What happens to the chromosomes
during anaphase?
Research It!
#5
Use complete sentences or TTQA.
Research It!
#6
Telophase
What happened to the chromosomes
during telophase?
Research It!
#7
1. Click the Mitosis Animation (Flash)
at the bottom of the screen.
2. Observe what happens in each phase
of mitosis.
Research It!
Use complete sentences or TTQA.
#8
Use complete sentences or TTQA.
Explore It!
Explore It!
#1
#2
1. The picture of the onion root tip shows
different cells in various stages of the cell
cycle.
2. Use the key to help identify the phases of the
cell cycle.
Explore It!
#3
Which phase of the cell cycle do cells
spend the most time?
1. Count the number of cells in each phase of
the cell cycle.
2. Use the key to help identify the phases.
3. Record the number of cells in interphase,
prophase, metaphase, anaphase and
telophase.
Explore It!
#4
Explore It!
#5
Explore It!
#7
Explore It!
#6
Explore It!
#8
Organize It!
#1
Organize It!
#2
1. Match the phase of the cell
cycle with the correct
characteristics.
2. Have it checked and then write
it on your lab sheet.
Organize It!
#3
Organize It!
#4
Interphase
Prophase
Cell rests and prepares for another round of cell division
Includes cell growth, DNA replication and preparation for
mitosis
Chromosomes become visible, nucleolus disappears,
nuclear membrane dissolves
Chromosomes are pulled to the middle of the cell
Metaphase
Anaphase
Telophase
Chromosomes are pulled away to opposite sides of
the cell
Chromosomes reach opposite sides of the cell and are no
longer visible. Two new cells begin to form.
Illustrate It!
#1
Illustrate It!
#2
1. Use the colored pencils shade in the
chromosomes/sister chromatids (red) and
the centrioles (yellow).
2. Shade the nucleus and dotted disappearing
nuclear membrane (green).
3. Shade the nucleolus (blue).
Illustrate It!
#3
Label the pictures with the correct phase of
the cell cycle (prophase, metaphase,
anaphase, telophase, interphase). They are
NOT in order on your lab sheet.
Illustrate It!
#4
Write It!
#1
Use complete sentences or TTQA.
Why is it necessary for your body to
undergo mitosis?
Write It!
#3
Write It!
#2
During anaphase of mitosis, the
chromosomes spilt into their sister
chromatids and are pulled away to
opposite sides of the cell. What do you
think would happen if the chromosomes
were not divided equally?
Write It!
Use complete sentences or TTQA.
The cell cycle is the series of events that
takes place in a cell leading to its division
and duplication. What do you think
would happen if something goes wrong
with the cell cycle?
Use complete sentences or TTQA.
#4
Choose It!
#1
Write the question and answer or TTQA.
Record it on your lab sheet.
1. Which of the following comparisons is NOT
correct?
A. prophase – nuclear membrane disappears
B. telophase--chromosomes appear
C. metaphase--chromosomes aligned at the
equator
D. anaphase--daughter chromosomes move
toward the poles
E. interphase--DNA replicates
Choose It!
#3
Write the question and answer or TTQA.
Record it on your lab sheet.
3. The diploid chromosome number for the house
fly is 12. The haploid number of chromosomes
found in their gametes would be _____.
A. 1
B. 3
C. 6
D. 12
Choose It!
#2
Write the question and answer or TTQA.
Record it on your lab sheet.
2. During the cell cycle, interphase is shorter
than mitosis.
A. True
B. False
If false, what is the correct answer?
Choose It!
#4
Write the question and answer or TTQA.
Record it on your lab sheet.
4. The first growth phase of a cell is
A. G1
B. S
C. G2
D. Mitosis
Choose It!
#5
Write the question and answer or TTQA.
Record it on your lab sheet.
5. Chromosome/DNA replication takes place
during ________.
A. G1
B. S
C. G2
D. Cytokinesis
Choose It!
#7
Write the question and answer or TTQA.
Record it on your lab sheet.
Choose It!
#6
Write the question and answer or TTQA.
Record it on your lab sheet.
6. Cytokinesis takes place during metaphase.
A. True
B. False
If false, what is the correct answer?
Choose It!
#8
Write the question and answer or TTQA.
Record it on your lab sheet.