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life cycle of a cell
-“__________”
- series of events that takes place from one
___________________to
the next
cell division
minutes to
- no set time for cycle- ranges from ________
days
________
make an organism, but also to
- not only used to _______
_________
replace parts in an organism such as skin, bone,
blood, etc.
growth and ___________
-period of ________
development of most
eukaryotic
____________cells
(cells with a nucleus)
- some cells, such as _________
cells and some
nerve
muscle cells are always in this phase
________
-Process in which the ________
nucleus divides to form 2
identical
___________
nuclei
- 4 steps:
1. __________
prophase
metaphase
2. __________
anaphase
3. __________
telophase
4. __________
- structure in the nucleus
______
material
hereditary
that contains __________
- A single strand of DNA in the nucleus of a cell
- 2 chromatids coiled together form a chromosome
Remember:
nucleus
1. It is the division of the __________
identical
2. produces 2 new nuclei that are ___________
to each
original
other and the ___________
cell
sex cells, have
- every cell in your body, except ____
46
_____chromosomes
(23 pairs)
- all of these cells have the same set of ___________
genetic
material (skin, hair, blood, liver cells all have the same
nucleus and the same 46 chromosomes
-pairs of ____________
chromosomes are fully visible
membrane disintegrate
- nucleolus and nuclear __________
centrioles move to opposite ends of cells
- ___________
spindle fibers
- _______________begin
to spread across cell
*** Plant cells do not have centrioles.***
chromosomes
-pairs of _____________up
along the center of the cell
- the ____________
centromeres (center of the chromatid) attach to
spindle fibers one on each side
the ___________,
-centromeres ___________
divide
and spindle fibers
shorten
____________
opposite ends of the cells
- chromatids move to _________
chromosomes now called chromatids
- separated ____________
disappear
-spindle fibers _____________
uncoil
- chromatids __________
- new __________
nucleus forms
animal cells- cell splits down the middle
- __________
- __________
cells- cell plate forms
plant
-a new organism is made from _____
one organism (one
parent)
hereditary material identical to
- offspring will have ____________
parent (clone)
bacteria uses to reproduce
-process _________
nucleus so it cannot divide by
- bacteria contains no ________
__________
mitosis
genetic material and then the cell
- copies the _______
_________
splits
-type of _________
reproduction
asexual
- _________
will create a bud, which once large enough
adult
will break away
cell division
-Process that uses ______________to
regrow body
parts
sponges planaria, and ________can
sea stars
-________,
also use this for
asexual reproduction