chapter 9 Flashcards
is an ordered set of stages that take place between the time a eukaryotic cell divides and the time resulting daughter cell divide
cell cycle
is a time when a cell performs its usual functions, depending on its location in the body
interphase
what does cell cycle- G1
growth
what does cell cycle- S
DNA synthesis
what does cell cycle- S
DNA synthesis
what does cell cycle- G2
growth and preparation
what does cell cycle- M
mitosis
copied DNA forms two identical chromosomes
sister chromatids
cells have agents that influence activities in the cell
signals
which are proteins received at the plasma membrane that stimulates growth, even cells locked into Go stage
growth factors
the presence of signaling proteins (directing the cell cycle)
cyclins
cyclins bind with enzymes
CDK- cyclin-dependent kinases
enzymes that induce apoptosis are called
caspases
DNA coils around bead like proteins called- these proteins play a tole in protein synthesis, but also serve for structure of the chromosome.
histones
the phosephate groups of DNA backbone have a negative charge that is attracted to the positive charge of histone proteins
nucleosomes
