Cell Division Flashcards
Cells grow in number, not _________.
Size
Reasons for Cell Division:
Cell growth, repair and replace of damaged cell parts.
DNA is organized into giant molecules called ____________.
Chromosomes
________________ are made up of protein & a long, single, tightly-coiled DNA.
Chromosomes
Molecule only visible when the cell divides:
Chromosomes
When a cell is not dividing the chromosome and is less visible:
Chromatin
__________ hold duplicated chromosomes together before they are separated in mitosis
Centromere
Each half of the chromosome is called a ________
Sister chromatin
Each sister chromatin contains the ____________ genetic information
Identical
The division of a nucleus is called __________.
Mitosis
The division of the cytoplasm is called __________.
Cytokinesis
What are the four stages of mitosis?
- ) Prophase
- ) Metaphase
- ) Anaphase
- ) Telephase
What is the longest phase of mitosis?
Prophase
What is the shortest phase of mitosis?
Metaphase
During what phase the Nucleolus and the nuclear membrane disappear?
Prophase
What happens to the DNA during interphase?
It is copied or replicated
What happens to the chromosomes during prophase?
Chromosomes are formed and visible
What happens to the chromosomes during metaphase?
They line up in the center
What happens to the chromosomes during anaphase?
They travel along the spindle fibers
What happens to the chromosomes during telophase?
They become less tightly coiled & appear as chromatin
What happens during each of the 3 stages of interphase? (G1, S, G2)
G1- cell is growing & preparing to replicate DNA.
S- DNA is copied or replicated.
G2- Cell prepares for nuclear division. (Mitosis)
Cell Division Definition:
The process by which cells produce new cells.
