Bio Notes

4.1 Cell Division and Genetic Material The jail cellular phone theory: solely life-time things atomic figure of speech 18 composed of one or more(prenominal) cells cells are the smallest units of living organisms new cells come from pre- animate cells by cell fragment Since all new cells are the product of existing cells, it follows that traits ( deoxyribonucleic tart deoxyribonucleic) must be passed from one cell, the parent cell, to new cells, the brothel keeper friend cells. The Cell wheel All somatic cells* go finished the cell bouts to make more cells. In multicellular organisms, there are three functions of cell divider: gain of the organism repair of tissues and organs that have been damaged precaution to replace dying or unwarranted cells Stages of the Cell Cycle Three main stand fors of the cell cycle: Interphase is the floor of reaping and intense cell activity Mitosis is the stage of separation of a cell and replicated DNA. Cytokinesis is the stage where the division of the cytoplasm occurs to effected the substructure of two new daughter cells. Cell cycle qualify points specific points in the cell cycle, monitor growth to project the cycle continues when it should. Regulation of the cell cycle occurs through a complex network of signals in the cell.

When something interferes with these signals, it results in masterless growth, e.g.: crabby person is the result of uncontrolled, fast cell division which results in a mass of cells called a tumor. Interphase: the cell grows, develops i! nto a mature, functioning cell, copies its DNA and prepares for division. The three phases of interphase: o G1 or maturation 1 : rapid growth and cell activity o S or implication: the cellular DNA is copied or replicated and the DNA exists are uncondensed fibres cognise as chromatin o G2 or Growth 2: cell synthesis more molecules prior to mitosis and cell division Mitosis: the cells copied genetical material separates and the cell prepares to split...If you want to get a safe essay, order it on our website: OrderCustomPaper.com

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