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What are the 2 limits to cell growth
surface area to volume ratio
cellular communication
What is cellular communication?
larger= more demand on DNA and harder to get info around
What increases faster volume or surface area?
volume
How is a cell's DNA like books in a library>
holds info
The rate @ which materials enter and leave through the cell membrane depends on
volume
What are the 2 new cells called after cell division occurs?
sister chromatids
What is the point @ which the chromatids are attached?
centromeres
Which phase consists of major cell growth?
G1 or interphase
List & describe 3 points of cell cycle
interphase=growth
mitosis= division of nucleus
cytokinesis= division of cytoplasm
Which phase is DNA replicated?
s stage
what are the 3 stages of mitosis?
PMAT
what 3 important things happen during prophase
nucleus dissolves
chromatin condenses into chromosomes
spindle fibers form
What are spindle fibers made of
microtubules
volume has to do with
size of cell
surface area has to do with
waste products out
cellular communication
what is chromatin
relaxed form of DNA (uncoiled)
what is a chromosome
carry genetic info
46
made of protein & DNA
coiled
what are sister chromatids
identical strands of DNA
G1
grows
G2
prepared for mitosis
S stage
replicate DNA
plant cytokinesis
cell plate forms
animal cytokinesis
pinched into 2
why do cells divide
to help you grow, to heal
what 2 cells form from sister chromatids
daughter cells
process that forms daughter cells
cytokinesis
when do chromosomes become visible
prophase
what happens during metaphase
chromosomes line up @ equator
what happens during anaphase
divide and sister chromatids move to opposite poles
what happens during telophase
reverse prophase
what is a cycline
protein binds to enzymes
starts G2 and S phase
regulates cell life
what is cancer
unregulated cell growth
2 types of stem cells
emybrionic
adult
stem cells are
unspecialized cells
Author
emilyyx14
ID
71900
Card Set
bio
Description
bio
Updated
2011-03-09T23:17:37Z
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