1. Macromolecules and Properties of Water

2. Bell Ringer 5 MIN. What kind of molecule is DNA?
What organelle in the cell makes proteins?
Throw Back: Name one difference between a prokaryotic and eukaryotic cell.

3. Agenda Bell Ringer (5) Jesus Lizard Video (5) Notebook Input (20)
Kahoot (20)
Independent Practice (20)
Exit Ticket (10)

4. Introduction: The Jesus Lizard
What makes the lizard able to run on water???

5. What are we learning today?
Today we’re going down to the smallest level in biology—atoms and molecules!
Four macromolecules
Carbohydrates
Proteins
Lipids
Nucleic Acids
Properties of Water

6. Notebook Input Today, write down everything that is underlined
Title your notes, Macromolecules and Water

7. Part A. Vocabulary
Macromolecules are polymers (poly=many) made up of monomers (mono=one)
Atoms that make up macromolecules:
C=carbon
H=hydrogen
O=oxygen
N=nitrogen
P=phosphorus
S=sulfur

8. Part A. The Four Macromolecules
Structure
Function
Other Characteristics
Example
Carbohydrates
C, H, O
Short term energy
Monomer= monosaccharide
Polymer= polysaccharide
Bread, pasta, starches
Lipids
Long term energy
Insoluble in water (does not dissolve)
wax, oil, butter, cholesterol
Proteins
C, H, O, N, S, made up of amino acids
Speed up chemical reactions (enzymes),
Also called polypeptides
muscle, meat
Nucleic Acids
C, H, O, N, P, S
Stores genetic information
Monomer: nucleotides
Polymer: DNA and RNA
DNA, RNA

9. Part B. Properties of Water
1. Ability to moderate temperature
2. Expansion upon freezing (takes up more space when frozen)
3. Versatility as a solvent
4. Cohesive ability (water is “sticky”)
Hydrogen bonds between water molecules explains these properties

10. Part C. Enzymes
Enzymes speed up reactions by lowering the activation energy
The molecules they affect are called substrates
Enzyme-substrate complex is the enzyme together with what it’s affecting
Enzymes affected by temperature and pH (acids and bases)

11. Part C. Properties of Water
1. Ability to moderate temperature
Teacher should explain that it takes a long time to heat water up (because the internal bonds (polar molecule) are hard to break) and it also takes a long time to freeze (because it stores heat) which means that it moderates temperature by mostly staying at the same temperature. This is why Miami is the same temp year round!!
So, why is Miami the same temperature all year?

12. 2. Expansion upon freezing (takes up more space when frozen)

13. What can water NOT dissolve???
3. Versatility as a solvent (it can dissolve many things!) Water dissolves other polar molecules
What can water NOT dissolve???
Check for understanding: What can water not dissolve? It can’t dissolve lipids such as oils

14. 4. Cohesive ability (water is “sticky”)

15. Why is water so cool?
Hydrogen bonds between water molecules explains these properties

16. Check For Understanding: The Jesus Lizard
What makes the lizard able to run on water???

17. Let’s Test Your Knowledge with Kahoot!
Students will get into partners to play kahoot

18. Independent Practice 20 MIN.

19. Exit Ticket 10 MIN.

20. Home Learning
Answer the following questions: 1. What are 4 biological macromolecules? 2. What property of water allows plants to move water from their roots up to their leaves? 3. Explain how enzymes work. 4. In which organelle in the cell would you find lipids? 5. Explain why proteins are known as polypeptides.