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Name:_______________________ Date:_____________________
Period:______
Notes Ch.5 Cell Growth and Division
5.1 Cell Cycle (B.6.1 Describe the process of mitosis and explain that this process ordinarily results in
daughter cells with a genetic make-up identical to parents.)
1. Draw and label the cell cycle.
2. The _______________________ is the repeated sequence of cell growth called
_________________________ followed by cell division called ____________________.
3. ____________________ is the process of nuclear division followed by cytoplasmic division
5. One of the most important factors affecting cell size is _________________ to
_____________________ ratio.
6. As a cell gets bigger, the volume _______________ 2x faster than the _______________
____________. There is not enough surface area for cells to take in __________________ and get rid of
__________________. Also, ________ is only programmed to make so much and when a cell gets larger
it needs _____________ products.
7. What are 3 purposes of cell division?
1.
2.
3.
8. During G1, the cell is carrying out its _______________ cell functions.
9. During the ___ phase _________ is replicated. At this point the cell is __________________ to divide.
5.2 Mitosis and Cytokinesis (B.6.1 Describe the process of mitosis and explain that this process ordinarily
results in daughter cells with a genetic make-up identical to parents.)
1. When chromatin coils it becomes a _____________________. During interphase DNA is in
________________ form and during mitosis it is in _____________________ form. Why is this
necessary?
2. How many chromosomes do you have?
3. _______________________ are a pair of cylindrical structure made of ________________________
that are only founding animal cells and just outside the nucleus.
4. Draw a replicated chromosome and label the centromere and sister chromatids.
5. What are the 4 steps of mitosis in order?
6. What type of cells does mitosis take place in?
7. How is cytokinesis different in plant and animal cells?
8. What is the end product of mitosis?
5-4 Asexual Reproduction
1. Prokaryotes reproduce ___________________, via a process called ______________
______________. Please draw.
2. What is an advantage to reproducing asexually?
Disadvantage?
5-3 Regulating the Cell Cycle
1. The cell cycle has many critical __________________ to regulate itself.
2. External factors, such as __________ factors, directly signal the cell to ___________ up or
____________ down.
3. ________________ factors, such as kinases and cylins, make sure everything is ______________
before moving onto the next stage.
4. ________________ is uncontrolled cell growth. A _______________ tumor is localized, whereas a
____________________ tumor.
5. _____________ are substances that promote the development of cancer. Give an example.
6. _______________ are genes that are mutated and cause cancer.
5-5 Multicellular Life (B.6.2 Understand that most cells of a multicelluar organisms contain the same
genes, but develop from a fertilized egg in different ways due to differential gene expression. )
1. Within multicellular organisms, cells communicate and work together in groups that form increasing
larger, more _____________ structures. List this arrangement.
2. All of the cells in your body come from a ____________ cell that differentiates into many different cells,
but that all essentially have the same _________________________.
3. Why do cells differentiate from each other?
4. Draw a developing embryo and show what organs develop depending on location.
5. What are stem cells and what are they used for?
6.
Which type do scientist prefer to use? Why is this an issue?
6.1 Chromosomes and Meiosis (B.6.4 Describe and model the process of meiosis and explain the
relationship between the genetic make-up of the parent cell and the gametes).
1. _____________ cells are also called body cells and sex cells are called __________________.
2. _______________ are chromosomes 1-22 and do not code for the ________ of an organism, but do code
for most everything else.
3. Humans have _____ pairs of __________________ chromosomes. We get ____ from mom and 1 from
_______.
4. Sex chromosomes are the ____ pair and a females carries ________, while a male carries _______.
5. It is the ___________ that determines the sex of a child.
6. Body cells have 2 copies of each chromosome, so they are _____________ ( ). Sex cells are
_______________ ( ), meaning they only have one copy of each chromosome.
7. Draw a diploid cell and a haploid cell with an organism having 2 pairs of chromosomes.
Diploid
Haploid
8. Draw the formation of a zygote showing chromosomes for a human.
9. _____________________ is a form of nuclear division that divides a ______________ cell into ___
haploid cells.
6.2 Meiosis (B.6.4 Describe and model the process of meiosis and explain the relationship between the
genetic make-up of the parent cell and the gametes).
1. Draw2 sets of homologous chromosomes.
2. What are 5 major differences between mitosis and meiosis
Mitosis
Meiosis
1.
1.
2.
2.
3.
3.
4.
4.
5.
3. How many sperm are made?
Eggs?
4. Compare the gametes with the parental germ cell they came from.
34.2 and 34.3 Reproduction (B.6.3 Explain that in multicellular organisms the zygote produced during
fertilization undergoes a series of cell divisions that lead to clusters of cells that go on to specialize and
become the tissues and organs)
1. A ________________ is a fertilized egg. As it continues to undergo cell division, it forms a hollow ball
of cells called a _________________________. Cells on the surface of it attach and implant into the
uterus forming an _________________.
2. Draw the process of an embryo being formed and the layers that form the body.
6.6 Meiosis and Genetic Variation (B.6.5 Explain how, in sexual reproduction, crossing over,
independent assortment and random fertilization, result in offspring that are genetically different from the
parents.)
1. Due to random combinations of gametes, what are the possible combinations for any fertilized egg?
2. Show how crossing over increases genetic diversity. When does it occur during
meiosis?_________________
3. Genes that are ____________ are closer on a chromosome and usually inherited
__________________. Those that are father away are separated by ____________
_____________.