cell division Flashcards
why do cells divide ?
the larger a cell becomes the more demands the cell places on it’s DNA
what can happen if a cell grows too large ?
it will have trouble moving enough nutrients and waste across the cell membrane
what is the most important thing a cell must do before it can divide? why?
all DNA must be copied the two copies separate so that each daughter cell ends up with a complete set of DNA
what are the two main stages of cell division
mitosis, cytokinesis
what are the two major phases of the cell cycle?
interphase and cell division
what are the three phases of interphase
G1, S, G2
which phase of the cell cycle accounts for the majority of the cell’s life?
interphase
what are the 4 phases of mitosis, in order?
P,M,A,T
when does cytokinesis occur
during telophase
what is the difference in the way animal cells and plant cells undergo cytokinesis ?
animals have a cleavage furrow that pinches the cell membrane inward until the cell is pinched into two separate cells. plants have a cell plate that forms midway, between the two nuclei.
what is the product of mitosis
two identical daughter cells
what is the importance of carrying out mitosis properly
to have cells who do their job correctly
what happens when cells come in contact with each other
they stop dividing; slows down
what can happen if a cell grows uncontrollably
it can damage cells around it
what do all cancers have in common
their protein regulations have failed to do their jobs
which type of reproduction is carried out by bacteria, specifically what is this called
a sexual; binary fission
