Chapter 5-Mitotic Cell Cycle Flashcards
name of process through which a cell makes exact copies of itself
mitosis
name the parts of chromosomes (4 parts)
chromatids
kinetochore
telomeres
centromeres
how many DNA molecules are in one chromosome?
2 molecules, one DNA molecule in each chromatid
how do chromosomes divide equally?
one chromatid goes into one daughter cell and the other goes into the other daughter cell
DNA+protein=?
and name the protein
chromatin
and the protein is histone
what is a nucleosome and describe its structure
- cylindrical structure made of up of 8 histone molecules
2. DNA is wrapped around the outside of the cylinder.
when are chromosomes the most coiled?
interphase
describe mitosis
a process by which genetically identical cells are made
how can uncontrolled cell division result in cancer?
mutations
chromatin exists in what 2 forms
euchromatin and hetrochromatin
during interphase, which type of chromatin is the majority of chromatin found as?
euchromatin
when is chromatin most condensed or coiled (darker)?
during metaphase
which is the first stage of a cell cycle?
interphase
what does a cell do during interphase?
carries out normal functions until it gets a signal to divide again
what happens after the signal for cell division has been recieved?
DNA replicates itself (so that each chromatid will have one DNA molecule)