Bio12.2 Flashcards
What percentage of interphase takes up the cell cycle can be divided into subspaces?
90%
First gap
G1 phase
S phase
Synthesis
G2 phase
Second gap
The cell grows during all three phases but chromosome are only duplicates during …?
S phase
Mitotic spindle
A structure made of microtubules that controls chromsome movement during mitosis
What is the mictrouble organizing center in animal cells
Centrosome
What begins the assembly of spindle microtubules?
Centrosome
The _____ replicates during interphase
Centrosome
After the centrosome replicates, what happens?
The forming two centrosomes that migrate to opposite ends of the cell during prophase and pro metaphase
Aster
Radial array of short microtubules
Where can you find the microtubules?
Extending from each centrosome
What is composed of the centrosomes?
The spindle microtubules and the asters
What do spindle microtubules attach to in pro metaphase?
Kinetochores
Protein complexes associate with centromeres?
Kinetochores
The chromosomes area ll lined up ath the ______ ____ in metaphase.
Metaphase plate
A plane midway between the spindle’s two poles
Metaphase plate
In anaphase the cohesions are cleaved by an enzyme called ____
Separase
Sister chromatids separate and move along the _______ ______ toward opposite ends of the cell.
Kinetochore microtubules
What microtubules from opposite poles overlap and push against each other, elongating the cell?
Nonkinetochore
