Cell Division
Jamae Gordoncillo
Professor Vacura
BIO 101 – Lab
31 October 2014
Cell Division Mitosis
Abstract
Mitosis and Meiosis: Cells can be divided in unicellular organisms or in multi-cellular organisms. DNA controls the cell division. Bacteria reproduce by a process called binary fission. Bacteria have one chromosome that's attached to the cell membrane. The chromosome replicates and the two copies separate as the cell grows. Over a period of time this one cell makes two cells. Eukaryotes do the process of mitosis. In mitosis, each daughter cell gets about half of the cytoplasm from the mother cell and one copy of the DNA. Cells have to replicate the chromosomes so each daughter cell can have a set before cell division can occur. When the chromosomes have replicated and are ready to divide they consist of two identical halves called sister chromatids. A central region called the centromere joins the sister cromatids. Each individual chromosome is a long molecule of DNA and proteins. DNA makes up the genes and chromosomes that are made up of genes.
Introduction
All new cells come from previously existing cells. New cells are formed by karyokinesis- the process in cell division which involves replication of the cell’s nucleus and cytokinesis-the process in cell division which involves division of the cytoplasm. Two types of nuclear division include mitosis and meiosis. Mitosis typically results in new somatic, or body, cells. Mitotic cell division is involved in the formation of an adult organism from a fertilized egg, asexual reproduction, regeneration, and maintenance or repair of body parts. Meiosis results in the formation of either gametes in animals or spores in plants. The cells formed have half the chromosome number of the parent cell.
Mitosis is best observed in cells that are growing at a rapid pace, such as in the whitefish blastula or onion root cell tips. The root tips contain a special growth region called the apical meristem where the highest percentage of
Professor Vacura
BIO 101 – Lab
31 October 2014
Cell Division Mitosis
Abstract
Mitosis and Meiosis: Cells can be divided in unicellular organisms or in multi-cellular organisms. DNA controls the cell division. Bacteria reproduce by a process called binary fission. Bacteria have one chromosome that's attached to the cell membrane. The chromosome replicates and the two copies separate as the cell grows. Over a period of time this one cell makes two cells. Eukaryotes do the process of mitosis. In mitosis, each daughter cell gets about half of the cytoplasm from the mother cell and one copy of the DNA. Cells have to replicate the chromosomes so each daughter cell can have a set before cell division can occur. When the chromosomes have replicated and are ready to divide they consist of two identical halves called sister chromatids. A central region called the centromere joins the sister cromatids. Each individual chromosome is a long molecule of DNA and proteins. DNA makes up the genes and chromosomes that are made up of genes.
Introduction
All new cells come from previously existing cells. New cells are formed by karyokinesis- the process in cell division which involves replication of the cell’s nucleus and cytokinesis-the process in cell division which involves division of the cytoplasm. Two types of nuclear division include mitosis and meiosis. Mitosis typically results in new somatic, or body, cells. Mitotic cell division is involved in the formation of an adult organism from a fertilized egg, asexual reproduction, regeneration, and maintenance or repair of body parts. Meiosis results in the formation of either gametes in animals or spores in plants. The cells formed have half the chromosome number of the parent cell.
Mitosis is best observed in cells that are growing at a rapid pace, such as in the whitefish blastula or onion root cell tips. The root tips contain a special growth region called the apical meristem where the highest percentage of