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Bio Cell Division

QuestionAnswer
Roles of mitosis Growth, replacement,repair of cells
What events happen during interphase? Cell growth, protein synthesis, cell materials produced to have enough for two cells, organelles copied
During what phase of the cell cycle does DNA replication occur? The S phase of interphase
Why is it necessary for DNA to replicate before cell division? Daughter cells need an exact copy of the DNA
List in order, each of the steps of mitosis Prophase, Metaphase, Anaphase, Telophase
How does cell division differ between plant cells and animal cells? A cleavage furrow forms in animal cells and a cell plate forms in plant cells (telophase; prepping for cytokinesis)
What are the stages of the cell cycle? what happens in each? Interphase: G1, S, G2. G1: cell growth, protein synthesis; S: DNA replication; G2: proteins synthesize for chromosome manipulation, some organelles duplicated, cytoskeleton dismantled to provide resources M: Mitosis, division of the nucleus
Explain how cell growth is controlled Tumor suppressor genes make proteins to control cell growth. For example, if errors are made during DNA rep, the cell cycle stalls for repairs
What role do stem cells have in the body? They replace cells as new ones are needed. They can differentiate into many different types of cells
Interphase Growth hormone signals a cell to divide
G1 phase Cell growth, protein synthesis
S phase DNA replication
G2 phase Growth, organelles copied, more proteins made
Mitosis Divide the replicated DNA
Stages of mitosis Prophase, Metaphase, Anaphase, Telophase
What happens during cytokinesis Cytoplasm divides, distributing organelles into the two daughter cells.
What happens during Prophase Chromosomes condense, mitotic spindle starts to form, nuclear envelope starts to break down
What happens during Metaphase Mitotic spindle binds to the chromosomes and lines them up in the middle of the cell
What happens during Anaphase Chromatids are pulled apart by the mitotic spindle and attached to the centromere and move to opposite poles of the cell
What happens during Telophase Mitotic spindle breaks down, chromosomes unwind, cleavage furrow (animal) or cell plate (plant) begins to form in preparation for cytokinesis
Cleavage furrow Animal cell
Cell plate Plant cell
Created by: gwalsh22
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