Cell Reproduction

1
Cell Reproduction     11.1 Cell Growth and
Reproduction   Cell Size Limitations  
1.   diffusion limits cell size because
for large cells diffusion isn't
______________________ enough  
2.   DNA limits cell size because for large cells
DNA cannot make enough ___________________________
  3.   as cell size increases,
volume increases twice as _____________________
as surface area
fast
enzymes
fast
600
2400
1000
8000
1.67
3.33
2
When Do Cells Divide?   1.  cells divide
when   a.  cells get too
________________________   b. 
tissues _____________________ and need to be
______________________ or _______________________
    Cell Reproduction The Role of
Chromosomes   1.  in non-dividing cells,
DNA and proteins in the nucleus form
_________________________________   2.  in
dividing cells, DNA and proteins that were in the
nucleus form __________________________________  
big
wear out
replaced
repaired
 
chromatin
chromosomes
  The Cell Cycle Phases of
Interphase G1 phase S
phase G2 phase
Phases of Mitosis
Prophase Metaphase
Anaphase Telophase    
3
The Cell Cycle (continued) 1.   all
stages of a cell's life make up the
____________________________________  
2.   cells grow during ___________________________
___________   3.   the nucleus divides
during ________________________ the cell divides
during ________________________  
Interphase   1.   during the G1 phase, the
cell __________________ this includes  
a.   making __________________,
___________________, _____________________, and
_____________________   b.   and
excreting _________________________  
2.   during the S phase, the DNA is
_________________________________  
3.   during the G2 phase, the growth involves
making structures necessary for
__________________________
cell cycle
interphase
mitosis
cytokinesis
grows
ATP
proteins
new organelles
repairs
wastes
replicated (doubled)
mitosis
4
nucleus
nuclear envelope
chromatin
nucleolus
centrioles
5
The Phases of Mitosis   Prophase Main
Features   1.      the chromatin coils
to form _____________________________________  
2.      the ______________________________
______ and ____________________________________
disappear   3.      centrioles (animal
cells only) migrate to opposite
_______________________ of the cell  
4.      the _____________________________ forms
chromosomes
nuclear envelope
nucleolus
poles
spindle
chromosome
centromere
chromatid
6
Prophase (continued)
7
Prophase (continued)
8
Metaphase Main Features   1.  spindle
fibers attach to _________________________________
___   2.  the chromosomes ___________________
_________ along the equator
centromeres
line up
9
Metaphase Main Features   1.  spindle
fibers attach to _________________________________
___   2.  the chromosomes ___________________
_________ along the equator
centromeres
line up
10
Anaphase Main Features   1.  the sister
chromatids ___________________ to opposite poles
move
11
Anaphase Main Features   1.  the sister
chromatids ___________________ to opposite poles
move
12
Telophase Main Features   1.  the
_____________________________________ uncoil to
form chromatin   2.  the ____________________
_________ disappears   3.  the
_____________________________________ and
____________________________________ reappear  
4.  the _____________________________________
starts to form between the nuclei
chromatids
spindle
nuclear envelope
nucleolus
plasma membrane
nucleus
nuclear envelope
chromatin
nucleolus
plasma membrane
13
  Cytokinesis Main Features   1.  the
_________________________________________ pinches
inward   2.  the ____________________________
________ gets divided in half   3.  for
plant cells, a ______________________________
forms between the daughter cells
plasma membrane
cytoplasm
cell plate
nucleus
nuclear envelope
chromatin
nucleolus
plasma membrane