How can we help?

You can also find more resources in our Help Center.

28 terms

cell division part 1

STUDY
PLAY
chromatin
Eukaryotic cell not dividing, DNA is threads
chromosomes
During cell division chromatin condenses to become
diploid
(2n) chromosomes in body cells
haploid
(n) chromosomes in gametes
kinase
an enzyme that removes a phosphate group from ATP and adds it to another protein
cyclin
Kinases in cell cycle are activated when they combine with a protein
interphase
before a cell actively divides, it must grow and duplicate much of its contents, so that two cells can form from one
used to describe all parts of cell cycle except the M stage
mitosis
nuclear division that produces two daughter nuclei, each with the same number and kinds of chromosomes as the parental nucleus
spindle
brings about orderly distribution of chromosomes
aster
short microtubules radiate from centrosome
somatic cells
every cell in your body but your egg cells; 99.9% of cells for women
synapsis
During meiosis I the homologous chromosomes pair up
independent assortment
means that the homologous chromosomes separate independently or in a random manner
cell cycle
the series of changes a cell undergoes from the time it forms until it divides
cell division
division of a parent cell into daughter cells
centriole
structure that helps to form the spindle
telophase
last phase of mitosis, chromosome are in two new cells and nuclear membranes start to reform
mitosis
division of the nucleus or chromosomes
metaphase
phase of mitosis in which chromosomes line up in the center of the cell
prophase
first phase of mitosis in which chromosomes become visible and nuclear membraine disappears
cytokinesis
division of the cytoplasm (cytosol and organelles)
anaphase
phase of mitosis in which sister chromatids are pulled to opposite sides of the cell
cancer
uncontrolled cell division
G1 phase
stage of interphase in which cell grows and performs its normal functions
S phase
stage of interphase in which DNA is replicated
G2 phase
stage of interphase in which cell duplicates its cytosol and organelles
meiosis
type of cell division that creates gametes; cell divides twice to create four cells that are genetically unique
crossing-over
process by which homologous chromosomes exchange pieces, resulting in greater genetic variety