cell reproduction Flashcards
process by which a cell divides to form two new cells( daughter cells)
cell division
three types of cell division/ cell reproduction
binary fission
mitosis
meiosis
Is a form of cell division in prokaryotic organisms that produces identical offspring
binary fission
cell or organism growth… replacement or repair of damaged cells
mitosis
formation of sex cells or gametes
meiosis
why do cells divide
DNA overloud
reproduction
Exchange of materials
tissue repair
growth
replication of genetic materials
if cells grow without limit, an “information crisis” would develop
DNA cannot serve the needs of the increasing size of cell
DNA overload
food and oxygen have to cross membrane very quickly
waste must go out
if cells is too large this occurs too slowly and cell will die
exchange of materials
prokaryotic cell division
binary fission
eukaryotic cell division
meiosis
mitosis
3 main steps of binary fission
DNA replication
Chromosome segregation
Cytokinesis
DNA is copied resulting in 2 identical chromosomes
DNA replication
2 chromosomes separate, move towards ends(poles) of cell
chromosome segregation
cytoplasm divides forming 2 cells
cytokinesis
each new daughter cell is_____ to parent cell
genetically identical
The cell Cycle has 3 phases
G1 Phase, S phase, G2 phase
G1 phase is
Cell growth
S phade is
DNA REPLICATION
G2 phase is
Preparation for replication
Cell increases in size
G1 phase
Replication of chromosomes
S phase
Organelles double
New cytoplasm forms
All other structures needed for mitosis form
G2 phase
DNA containing cells genetic code
Chromosomes
Each chromosomes has a matching pair
Homologous pair
During interphase each chromosomes _____
Copies itself
DNA found on chromosomes located in____
Nucleus of cell
Cell cycle continues process
Cells grow
DNA replicated
Organelles duplicated
Divide to form daughter cells
2 main steps kf eukaryotic cell division
Mitosis
Cytokinesis
4 steps of mitosis
Prophase
Metaphase
Anaphase
Telophase
Cytoplasm divide forming 2 cells
Cytokinesis
Nuclear division
Mitosis
Mitosis is followed by____
Cytokinesis
Process that divides cell nucleus to produce two new nuclei each with a complete set of chromosomes (continues process)
Mitosis
Chromosomes visible(sister chromatids)
Nuclear membrane disappears
Spindle forms
Prophase
Centrioles migrate to the poles
In animals