Warm Up 11/30 & 12/3/12 Copy objective: 10-15 minutes Answer: I will be able to examine specialized cells. I will be able to identify the components of DNA. Answer: What is the difference between plant cells and animal cells? Do all animal cells look like “this” animal cell? If not, how are they different? How are cells different from each other?

Needs to be turned into the box by end of day today 5 minutes Needs to be turned into the box by end of day today From Last Class Cell Energy Write to Learn Cell Energy Mini Assessment Exit Ticket From Today Cell Specialization Activity DNA Practice

Cell Specialization 20 min You will be looking at 10 pictures of different cells from plants an animals Make observations of the following compared to the “traditional” plant or animal cells: Compare Shape Organelles Number of each organelle Size

Cell Specialization Elbow Partners 10 min Cell Specialization Elbow Partners Answer these questions with your elbow partner Why do you think they are all different? Why is a nerve cell long? Why is a blood cell flattened? Why does the muscle cell have more mitochondria? What makes each cell different? Do they have the same DNA?

Muscle cell

Red blood cells

Nerve Cell

Epithelial cell

Wood Stem Cell

Stem Cross Section

Bone Cell

Skin Cells

Stem cells…

15 min DNA Notes

Nucleic Acids All living things contain DNA and RNA  

Nucleotides Building blocks of nucleic acids  

DNA DNA = deoxyribonucleic acid it’s components are:   it’s components are: 1. deoxyribose (sugar) 2. phosphate group 3. nitrogen base

Nitrogen Bases DNA Nitrogen Bases 1. adenine (A) 2. thymine (T) 3. cytosine (C) 4. guanine (G)

Base Pairing adenine ---thymine guanine --- cytosine Apple-Tree Chewing-Gum   

DNA structure is a “double helix”

DNA DNA forms chromosomes Chromosome are genetic material passed on from parents to offspring                        

5 min Notes Summary Write a 4 sentence summary about your DNA notes

Group Puzzle Step 1 Step 2 Step 3 10 min Group Puzzle Step 1 Using your puzzle pieces find other students and create a complete nucleotide Step 2 Now find a nitrogen base to pair with Step 3 Now find more nucleotides and create a DNA section

10 min DNA Practice Complete the DNA structure practice problems

Exit Ticket Define these terms in your own words 10 min Define these terms in your own words Cell differentiation DNA Nucleotide Chromosomes What are the base pairings for DNA Why are cells designed differently?