Cell Reproduction:
Binary Fission & Cell Cycle
Prokaryotes vs Eukaryotes


Prokaryotes = _____________________________
 Have no ___________________
 DNA in a _____________________________
Eukaryotes = _____________________________
 Cells with a nucleus
 _______________ DNA (has beginning and end)
Binary Fission:
Simple _________________(________________) division
Definition:
Process of cell division that produces
________________________________ in
prokaryotic cells.
ex. _______________________
Binary Fission-2 Steps:
1) ____________________________
2) ____________________________
The Cell Cycle:
How do you grow?????
 Living things are often made of __________ of
cells
 These cells are often:
 _________________
 being ___________________ or
 the organism may be ____________
__________________________…
 So, where do all these cells come from?
Cell Cycle (Eukaryotes) ___________________________
__________________________________________
__________________________________________
__________________________________________________________
Different Forms of DNA in the Cell Cycle
1. ________________________________
2. ________________________________
3. ________________________________
Chromosomes
Definition:
________________________________ DNA
Structure:
 a ________________________ DNA molecule
-- OR --
 _____________________, it may be ______ coiled DNA molecules held together at the center.

The area it is held together is called “___________”
Chromatin:
 Nuclear DNA in a __________, “_____________- __________” structure
 during __________________ of the cell cycle.
 DNA ________________ it is super-coiled into chromosomes
Chromatid:
 __________________________________________ ____________________…therefore, each
replicated chromosome has 2 chromatids.
NOTE: Chromosomes, Chromatin and Chromatids are all made of the same DNA, it’s just _________
__________________________________________________________.
Phases of the Cell Cycle
G1 (________________________________):
Cell
_________________
All _____________________________ of the cell
S (________________________):
___________ Copied
Individual chromosomes consist of ________________________ attached at the centromere
G2 (________________________________):
_____________________________________________________________________________
________________________ replicate, microtubules are reassembled
M
_______________________:
Nucleus divides into _______________________
C
_______________________:
______________________ divides into 2 cells
How many chromosomes does a cell have?
Homologues:
 two chromosomes that ________________________________ _______________(ex. eye color, etc)
 Two options in a cell:
1. _____ homologues (diploid)
2. _____ homologue (haploid)
Haploid vs Diploid
 Humans have ______ pairs of homologues in all cells except ___________________
This is called ________________ or _____
N stands for the number of unique chromosomes
These non–sex cells are called “______________________ cells”
That means human somatic cells have _______ total
 Sex Cells: __________________ or _____
 (think “half”).
 This is how many chromosomes are in ______ cells
 Sex Cells are called “_________________.” (ex. egg and sperm)
Human Sex Cells have _____ chromosomes in them.