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Biology

chapter 10

QuestionAnswer
cell division process when a cell divides into two new daughter cells
a cell can divide when it replicates or copies the dna
cells must divide because the larger it becomes the more demands it places on its dna and the cell wall will have trouble getting enough nutrients and removing enough wastes
chromosome made up of DNA and proteins-carries genetic info from one generation of cells to the next
sister chomatids one of two sister parts of duplicated chromosomes; when cell divides, they separate from each other one going to each of the two new cells
centromere button like center that holds the sister chromatids together to form a chromosome
cell cycle series of events that cells go through as they grow and divide
phases of cell cycle G1, S, G2 and M
Interphase G1, S and G2 make up this phase
Cell Division known also as the M phase
Two stages of M phase in the cell cycle Mitosis and Cytokinesis
centriole one of two tiny structures in the cytoplasm that play a role in cell division
spindle a fan like structure that helps separate chromosomes during mitosis
prophase chromosomes visible, nuclear envelope begins to break down, nucleus disappears, spindles and centrioles form
metaphase chromosomes line up in middle of cell
anaphase chromosomes split and chromatids move to opposite ends of the cell
telophase final phase of mitosis, chromosomes break down, nuclear envelope and nucleolus forms, spindle breaks apart
citokinesis division of cytoplasm happens here
G1 the cell grows, makes proteins and new organelles
S DNA makes a copy of itself
G2 preparation for mitosis- organelles and molecules needed for cell division are produced
Mitosis division of the nucleus- 4 stages: prophase, metaphase, anaphase and telophase
cytokinesis division of the cytoplasm
Created by: mcatoe
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