one cell cycle math
one cell cycle is 75 minutes. cells duplicate so by 7.5 hours you would have 64 cells because 2-4-8-16-32....
what major event is mitosis a part of ?
the cell cycle
which type of cell does mitosis occur in ?
body cell - somatic cells
which type of cell does meiosis occur in ?
sex cell - gametes
4 phases of mitosis in order
prophase, metaphase, anaphase, telophase PMAT
3 stages of the cell cycle
interphase, mitosis, cytokinesis
Mitosis
stage of the cell cycle during which the cells nucleus divides into two new nuclei, giving each daughter cell a copy of the DNA.
Anaphase
phase of mitosis in which centromeres split and chromatids separate to opposite ends of the cell
Interphase
stage of the cell cycle before cell division occurs. during this stage the cell grows to its mature size, replicates its DNA and prepares to divide into two cells
Metaphase
phase of mitosis in which chromosomes line up at the equator of the cell and spindle divers attach to the centromere
the cell cycle
the regular sequence of growth and division that cells undergo
Prophase
chromosomes condense and become visible, centrioles move to opposite sides of the nucleus, nucleus disappears, nuclear membrane breaks down, longest phase. Spindle fibers attached to centromeres of chromosomes.
spindle fibers
fanlike structure that helps separate chromosomes
Telophase
phase of mitosis in which the cell stretches and divides into 2 identical daughter cells (clones), the chromosomes uncoil, and the nucleus reappears. nuclear membrane re forms. spindle breaks apart
animal cells cytokinesis
cleavage furrow
clevage furrow
pinches the cell into two parts
Cytokinesis
the stage of the cell cycle in which the cytoplasm divides, distributing organelles into each new daughter cell. it begins the same time as telophase and marks the end of cell division.
G1 phase
phase in which the cells do the most growing. during it, cells increase size and synthesize new proteins and organelles
S phase
phase in which chromosomes are replicated and the synthesis of DNA molecules takes place
G2 phase
phase in which many of the organelles and molecules required for cell division are produced. shortest phase of interphase.
3 things happen during the cell cycle
grows to mature size, prepares for cell division, divides to form 2 daughter cells
mitosis and cytokinesis occur in
M phase
cell division
Process by which a cell divides into two new daughter cells.
4 phases of cell cycle
G1, S, G2, M
phases of the cell cycle
3 stages of interphase
G1, S, G2
cell membrane
the larger the cell the more trouble it has moving enough nutrients and wastes across the
As the length of a cell increases, its volume increases faster than its
surface area
To avoid growing too large, cells regulate their size by
dividing
what can happen if a cell were to get too large for the amount of DNA it has ?
slow-rate of exchange for food, oxygen. and waste disposal DNA overload
what substances must pass through a cells membrane for the cell to continue to function?
Food, oxygen, and water enter a cell through its cell membrane. Waste produces leave the same way.
to avoid DNA overload
larger cells place more demand on DNA. where into is to control cell
to exchange materials more easily
food, oxygen, water, and wastes enter/exit cell via cell membrane
# of chromosomes in humans
46
Early Anaphase picture
Early Metaphase picture
Early Prophase picture
Early Telophase picture
Interphase (picture)
Late Anaphase
Metaphase picture
Mid Prophase picture
late telophase picture
Cytokinesis picture