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Cell Division – Ch4/Sect 3 Pgs. 129 – 136
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The Big Idea Cells divide to increase their numbers through a process called mitosis, which results in 2 daughter cells with identical sets of chromosomes. Term Cell cycle – The regular sequence of growth and division that cells undergo. Chromosome – a doubled rod of condensed chromatin.
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Terms and Pics Interphase The stage of the cell cycle that takes place before the cell division occurs. Replication - The process by which a cell makes a copy of the DNA in its nucleus. Mitosis - One copy of the DNA is distributed into each of the daughter cells. Cytokinesis- The Final stage of the cell cycle in which the cells cytoplasm divides, distributing the organelles into each of the 2 new cells
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Stage 1 Interphase – Pg. 130 Main Idea: During the Cell cycle, cells divide and grow. How do little pigs get to be big pigs? Their cells ___________ and ___________. During the first part of interphase, the Cell grows to its ______ ______ and produces structures it needs. The cells make an exact _______ of the DNA. This is called ____________. Preparation for Cell ___________ begins.
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Stage 2: Mitosis Pg. 131 Main Idea: The Cells Nucleus Divides into two Nuclei. Prophase Metaphase Anaphase Telophase
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Stage 3: Cytokinesis – Pg. 134
Main Idea:The final stage of the cell cycle. Cytoplasm ____________. 2 daughter cells have ____________. Each cell has the same number of chromosomes.
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Structure and replication of DNA – Pg. 135
Main Idea: DNA Replication ensures that each daughter cell has the genetic info it needs to carry out its activities. DNA are wound around _____________. Its shaped like a twister ladder. Each new DNA exactly matches the order in the original DNA molecule. DNA Molecules unwind and separate like a zipper unzipping.
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Questions for this Section
Create 2 questions for this section of the chapter. Use 2 of these sentence starters: Explain the ____________________ During Mitosis __________________ What happens during_____________ Describe the ___________________
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Summarize Summarize the cell cycle:
During the cell cycle cells grow and divide. First,
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