Ch 4 Review Glencoe Power Pt by kg1VS9

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                            Chapter Review Questions

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                           Paramecium




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                           Cell Cycle




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                           Interphase




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Cell Division




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                             DNA




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Cell Division




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Prophase




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Metaphase




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Anaphase




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Telophase




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                           Mitosis Ends




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Chromosomes




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Female Cat




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                            Kitten




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Potato With
Sprouts




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                     Starfish Regrowth




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                           Sperm and Egg




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                           Male Cat




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                 Sexual Reproduction




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Meiosis I and II




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                           Meiosis I




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Prophase I




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Metaphase I




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Anaphase I




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Telophase 1




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                           Meiosis II




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Prophase II




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Metaphase II




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Anaphase II




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Telophase II




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                           Diploid Cell




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DNA Chromosome




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DNA Band




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                           DNA Molecule




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DNA Ladder




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                           DNA Unzips




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Chromosome 7




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DNA Nucleus




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                           DNA and RNA




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Frog With
Mutation




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                                 Foldables

       How and Why Cells
       Divide
Make the following Foldable to help you
organize information from the chapter about cell
reproduction.




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                                 Foldables




Draw a mark at the
midpoint of a vertical sheet
of paper along the side
edge.




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                                 Foldables




Turn the paper
horizontally and fold
the outside edges in
to touch at the
midpoint mark.



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                                 Foldables




Use a pencil to draw a
cell on the front of
your Foldable as
shown.




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                                 Foldables

       Analyze


As you read the chapter, write under the flaps
how cells divide. In the middle section, list
why cells divide.




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                               Video Clips




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                             Video Clips




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                               Video Clips




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                          Reviewing Main Ideas
1
      Cell Division and Mitosis
• The life cycle of a cell has two parts—growth
  and development, and cell division.

• In mitosis, the nucleus divides to form two
  identical nuclei. Mitosis occurs in four
  continuous steps, or phases—prophase,
  metaphase, anaphase, and telophase.



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                           Reviewing Main Ideas
1
       Cell Division and Mitosis
• Cell division in animal cells and plant cells is
  similar, but plant cells do not have centrioles
  and animal cells do not form cell walls.
• Organisms use cell division to grow, to
  replace cells, and for asexual reproduction.
  Asexual reproduction produces organisms
  with DNA identical to the parent’s DNA.
  Fission, budding, and regeneration can be
  used for asexual reproduction.

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                           Reviewing Main Ideas
2
       Sexual Reproduction and Meiosis
• Sexual reproduction results when an egg and
  sperm join. This event is called fertilization,
  and the cell that forms is called the zygote.
• Meiosis occurs in the reproductive organs,
  producing four haploid sex cells.
• During meiosis, two divisions of the nucleus
  occur.
• Meiosis ensures that offspring produced by
  fertilization have the same number of
  chromosomes as their parents.
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                          Reviewing Main Ideas
3
      DNA
• DNA is a large molecule made up of two
  twisted strands of sugar-phosphate molecules
  and nitrogen bases.

• All cells contain DNA. The section of DNA
  on a chromosome that directs the making of a
  specific protein is a gene.



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                          Reviewing Main Ideas
3
      DNA
• DNA can copy itself and is the pattern from
  which RNA is made. Messenger RNA,
  ribosomal RNA, and transfer RNA are used
  to make proteins.

• Permanent changes in DNA are called
  mutations.



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                                Chapter Review


         Question 1
Which is NOT a phase of mitosis?


A. anaphase
B. interphase
C. intraphase
D. metaphase



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                                Chapter Review

         Answer
The answer is C. There is no phase of mitosis
called intraphase.




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                                Chapter Review


         Question 2
A hydra that reproduces by budding is an
example of _______?

A. asexual reproduction
B. mitosis
C. regeneration
D. sexual reproduction


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                                 Chapter Review

          Answer
The answer is A. Asexual reproduction results
in offspring that are an exact copy of the adult.




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                                Chapter Review


         Question 3
What type of nitrogen is found in RNA, but not
in DNA.


         Answer
The answer is uracil. RNA has the base uracil
instead of thymine.


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                                Chapter Review


         Question 4
When cells have pairs of similar chromosomes,
they are said to be _______.


         Answer
The answer is diploid. A typical human body
cell is diploid.


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                                Chapter Review


         Question 5
This illustration
represents what division
of the nucleus?




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                                Chapter Review


         Answer
The answer is meiosis 1. The end result of
meiosis 1 is a pair of new cells, each with one
duplicated chromosome from each parent.




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                      Standardized Test Practice


         Question 1
Which letter corresponds with the step of
mitosis where each
centromere divides, the
spindle fibers shorten,
each pair of chromatids
separates, and
chromatids begin to
move to opposite ends
of the cell?
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                        Standardized Test Practice




A. A
B. B
C. C
D. D




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                      Standardized Test Practice


         Answer
The answer is C. Anaphase is the third step of
mitosis.




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                        Standardized Test Practice


           Question 2
Which letter
corresponds with
telophase?

A. A
B. B
C. C
D. D

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                      Standardized Test Practice


         Answer
The answer is D. During telophase, spindle
fibers start to disappear, the chromosomes start
to uncoil, and a new nucleus forms.




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                         Standardized Test Practice


            Question 3
Which is the number of chromosomes in a body
cell?

A. 23
B. 36
C. 42
D. 46


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                      Standardized Test Practice

         Answer
The answer is D. Each human body cell has
23 pairs of chromosomes, 46 chromosomes all
together.




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                      Standardized Test Practice


         Question 4
Sea stars can grow new arms. What is this an
example of?

A. asexual reproduction
B. budding
C. regeneration
D. sexual reproduction


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                      Standardized Test Practice

         Answer
The answer is C. Regeneration is the process
that uses cell division to regrow body parts.




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                      Standardized Test Practice


         Question 5
Which is the best answer?

A. The instructions for making a specific gene
are found in protein.
B. Genes are found in the cytoplasm.
C. The gene determines the order of amino
acids in a protein.
D. A change in the gene does not change the
outcome of an inherited trait.
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                      Standardized Test Practice

         Answer
The answer is C. Changing the order of the
amino acids makes a different protein.




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