Warm up: 1. What are the 3 parts to cell theory? 2. How are new cells "born"?

Cell Division Chapter 2; Section 1

All cells can divide Parent cell: original cell Daughter cells: 2 new cells after division

DNA must divide for a cell to divide. What is DNA?

With your partner, take the "Tour of the Basics" Its link is on the class website, Cell and Heredity Chapter 2. Complete the webquest.

DNA: DeoxyriboNucleicAcid The genetic material for your cells Makes you who you are!

DNA Structure: 2 Long Strands attached at middle Nucleotides -Phosphate -Sugar (deoxyribose) -Base (adenine---thymine, guanine-----cytosine)

Put together the DNA model from your pages. The bases in the center are like puzzle pieces! Answer the questions on the back.

Genes are pieces of DNA Provide instructions for cell functions or traits Make proteins

Chromosomes are structures made of DNA wrapped around proteins Prokaryote Eukaryote

Humans have 23 pair of chromosomes The last pair is XX in females and XY in males

Typical Chromosome:

Warm Up: 1. Where is protein actually made? 2. Where are the instructions for making proteins stored? 3. What is the difference between chromosomes and genes?

Mitosis: Nuclear division DNA replicates and then divides into 2 "new" cells

Eukaryotic Cell Division: Mitosis is nuclear division Read p in hard cover text

Extraction of DNA!!!!!

Warm up 1. What is mitosis? 2. What are some of the steps that happen in mitosis?

Please take the You Be the Chemist test DO NOT write on the test packet Cover your answers until all are finished

YBTC Key 1.D 2.D 3.B 4.A 5.C 6.B 7.B 8.C 9.A 10.A 11.B 12.A 13.A 14.D 15.C 16.B 17.B 18.C 19.C 20.B 21.C 22.C 23.B 24.B 25.C

Eukaryotic Cell Division: Mitosis is nuclear division

Watch the video and complete the stages web

nuclear division Prophase Metaphase Anaphase Telophase Chromosomes condense & nuclear membrane disappears Chromosomes move to middle Chromosomes move apart Cells pinch apart and all organelles divide create new cells

Now...use your web to complete the mitosis wheel

Chromosomes condense & nuclear membrane disappears Chromosomes move to middle Chromosomes move apart Cells pinch apart and all organelles divide Cells grow and DNA replicates

Cells have a cell cycle It includes all the stages a cell goes through Mitosis (cell division) is only 1 small part Mitosis creates new, identical cells

DNA Replication MUST occur for cells to divide

Interphase C ells grow DNA is copied (replicated)

Prophase C hromosomes condense Nuclear membrane disappears

Metaphase C hromosomes line up at the Middle

Anaphase C hromosomes move Apart

Telophase N ew nuclei are formed Cell pinches in the middle Daughter cells

Prokaryote cell division:

Why is cell division more complicated in Eukaryotes than it is in prokaryotes?