Bio test unit 6
Terms in this set (16)
(ღ)spindle fibers link the chromatids of each fibers align the chromosomes along the middle of the cell nucleus; this ensures that in the next phase, when the chromosomes are separated, each new nucleus will receive one copy of each chromosome.
Enzyme Ligase Function
(ღ)Glues Okazaki fragments together
Enzyme DNA polymerase
Enzymes that create DNA molecules by assembling nucleotides, the building blocks of DNA
Division of the cytoplasm to form two separate daughter cells. Happends around same time as telophase. Plants=cell plate gradually develops into a cell membrane and animals draw inwards in to cleavage furrow.
(ღ)nucleus divides into 2 daughter cells
Prophase, Metaphase, Anaphase, Telophase
Chromatin condenses into chromosomes; nucleolus disappears; Centrioles begin moving to opposite ends of the cell; Fibers cross the cell to form spindle
The pair of sister chromatids separate and move to opposite sides of the cell.
ღThe chromosomes gather at opposite ends and lose their distinctive shape. 2 new nuclear envelopes form around them. Chromatids arrive at opposite poles of cell, and new membranes form around the daughter nuclei; The chromosomes and spindle fibers dissolve and break down and disappear. Cytokinesis may begin during this stage.
Interphase(Before mitosis and prophase)
G1 Phase,Synthesis Phase,G2 Phase
Longest stage cycle
cell cycle stages
Interphase, mitosis, cytokinesis, g1 phase, g2 phase, synthesis phase, prophase, metaphase, anaphase, and telophase.
Longest phase, cells increase in size and synthesize into new proteins and organelles(cell growth)
organelles and molecules required for cell division are produced, shortest
cell growth and copying of chromosomes in preparation for cell division
phase of mitosis in which the chromosomes line up across the center of the cell