Cell Cycle Flashcards
Why do cells divide
Reproduction of unicellular organisms
Growth of multicellular organisms
Renewal and repair of tissues
What is the cell cycle
Interphase,
Mitosis
Cytokinesis
Interphase
The phase in which cell growth and DNA replication occur
Is the longest phase
DNA is replicated to form two copies of each chromosome
What is a copy of a chromosome
chromatid
What is PMAT
Prophase Metaphase Anaphase Telophase Mitosis produces identical body cells
What happens in interphase
cell must more or less double in size
copy its genetic material
cell containing two identical copies of every chromosome (chromatids)
What happens in prophase
chromosomes are packed into a more compact form
formation of the mitotic spindle (to move chromosomes)
What happens in metaphase
chromosomes are lined up along a starting line
across the middle of the cell
What happens in anaphase
chromatids are quickly drawn apart
What happens in telophase
chromosomes uncoil into their extended working form, the spindle is dismantled and the daughter nuclei form
Cytokinesis
Splits the cytoplasm into two identical cells