Chapter 8 The Cell Cycle & Mitosis
What are the three stages of the cell cycle?
1. Interphase 2. Mitosis 3. Cytokinesis
What are the three steps of interphase?
G1, S, G2
In what phase of the cell cycle are the chromosomes copied?
Interphase
What is the function of the spindle fibers?
Move chromosomes during mitosis
Which phase of mitosis do the chromosomes uncoil?
telophase
Which phase of mitosis does the nuclear envelope reapper?
telophase
What is the metaphse plate?
the gathering of the chromosomes in a perfect line at the exact center of the
In what phase of the cell cycle does the nucleus divide?
Mitosis
What are daughter chromosomes?
a chromosome that results from the separation of the sister chromatids
In which phase(s) of interphase does growth happen?
all phases
In which phases of mitosiss is the constriction of spindle fibers happening?
anaphase
Which phase of mitosis do the sister chromatids begin to be pulled apart?
anaphase
What is cytokinesis?
division of the cytosol
In which phase of cell cycle are the chromosomes relaxes (and are known as chromatin)?
interphase
In what phase of the cell cycle does the cell grow?
interphase (during all 3 steps)
In which phase(s) of interphase do the chromosomes replicate?
interphase S
Which phase of mitosis do the chromosomes begin to move towards the center?
prometaphase
Which phase of mitosis does the nuclear envelope completely disappear?
prometaphase
In which phase of mitosis do chromosomes condense?
prophase
Which phase of mitosis do the spindle fibers form at the centriole pairs?
prophase
Which phase of mitosis does the nuclear envelope begin to break down?
prophase
What are the phases of mitosis?
prophase, prometaphase, metaphase, anaphase, telophase
What is the difference between a cleavage furrow and a cell plate?
1) cleavage furrow- animals(phospholipid bilayer squeezes together and eventually pinches off) 2) cell plate=plants (because of cell wall)
What are three purposes of mitosis?
1)reproduction (uni-c) 2)growth and development (multi-c) 3)tissue renewal(multi-c)
What are sister chromatids?
2 identical copies of DNA held together by a centromere
What two structures do the spindle fibers attach to?
Centrioles & kinetochores
In what phase of the cell cycle does the cell divide?
Cytokinesis
What is the longest stage of the cell cycle?
Interphase (90% of cell life)
In what phase of the cell cycle does do the chromosomes replicate?
Interphase S
Whih phase of mitosis do the centromeres split?
anaphase
What is the function of centriole pairs?
anchor & winch
What is binary fission?
asexual reproduction, in bacteria, "division in half"
In what phase of the cell cycle are the chromosomes "spaghetti-like"?
interphase
Which phase of mitosis are the centriole pairs at 180*
metaphase
Which phase of mitosis are the chromosomes at the center?
metaphase
Which phase of mitosis do the spindle fibers attach to the kinetochore?
metaphase
Whih phase of mitosis do the spindle fibers disappear?
telophase
