Wake-up 1. Explain the main events of Interphase. 2.Explain the main events of prophase.
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Transcript of Wake-up 1. Explain the main events of Interphase. 2.Explain the main events of prophase.
![Page 1: Wake-up 1. Explain the main events of Interphase. 2.Explain the main events of prophase.](https://reader036.fdocuments.us/reader036/viewer/2022062413/5a4d1b547f8b9ab0599a8c28/html5/thumbnails/1.jpg)
Wake-up
1. Explain the main events of Interphase.
2.Explain the main events of prophase.
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Cell Cycle Summary
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Purpose of the Cell CycleTo grow, replace old cells, or reproduction
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Location of the Cell Cycle
Within an organisms body cells
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What is a Body Cell?
All the cells that make up the “body” of an organism.
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All organisms have chromosomes (condensed DNA); Also a specific number
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Total Number of Chromosomes in a Human Body Cell
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How many chromosomes do other organisms have compared
to humans????
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How many chromosomes are in a dog?
78
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How many chromosomes
are in a mosquito?
6
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How many chromosomes are in a Adders Tongue Fern?
1262Most chromosomes
of ALL organisms
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1st Step of the Cell Cycle
Interphase: Cell prepares to divide by
making more organelles and
cytoplasm; Replicates DNA
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2nd Step of the Cell CycleMitosis: The replicated DNA is separated
Made up of PMAT
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Prophase
DNA coils up into
chromosomes; nucleus
disappears; spindle fibers
appear
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Metaphase
Chromosomes line up in the middle of the
cell
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Anaphase
Sister chromatids are
pulled to opposite ends
of the cell
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Telophase
Opposite of Prophase; DNA
unwinds; spindle fibers
disappear; nucleus
reappears
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3rd Step of the Cell Cycle
Cytokinesis: The cell divides the organelles and cytoplasm into the new cell
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End Result of the Cell Cycle
Two identical cells with the same number of chromosomes
Interphase MitosisCytokinesis
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Summary DiagramDon’t Draw
DNA is in chromatin form
DNA is replicated
during S phase
How many Chromosomes?
3 Chromosomes
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DNA is condensed into chromosomes
Metaphase, Anaphase, Telophase
Sister Chromatids are
separated
How many Chromosomes?
3 Chromosomes
How many Chromosomes?
3 Chromosomes in each cell
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If an organism has 50
chromosomes and it undergoes
mitosis, how many
chromosomes will be present in
the new cells?
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If an organisms diploid number chromosome is 100, how many chromosomes will be
present in the new cells?
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If an organism has 18
chromosomes and it undergoes
mitosis, how many
chromosomes will be present in
the new cells?
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If an organisms diploid number chromosome is 134,568, how
many chromosomes
will be present in the new cells?
134, 568