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Aim: What are the
building blocks of life?
Do Now
1. Why does a coach tell athletes to eat
carbohydrates the night before a
game?
2. Why do body builders drink protein
shakes?
Our bodies including our cells need these
macromolecules to run smoothly:
The 4 Macromolecules are
Carbohydrates
Lipids
Nucleic acids
Proteins
The macromolecules are
organic which means
they
• Contain carbon
and hydrogen
• Ex: C6H12O6
CH4
Macromolecules- also called
polymers
• “Giant molecules” made up of smaller molecules
POLYMERS
MONOMERS
Carbohydrates
• Simple Sugars ( glucose ) - monomer,
building block
• Starch and Cellulose are large polymers
• Cellulose - cell wall
Figure 2-13 A Starch
Section 2-3
Starch- Polymer
Glucose- Monomer
Starch
Glucose
Go to
Section:
LIPIDS- Store Energy
• Lipids are formed from one glycerol
molecule and 3 fatty acids
• 3 fatty acids + glycerol
Lipid=Polymer
Fatty Acid= Monomer
Proteins- POLYMER
• The monomer or
building blocks of
proteins are amino
acids.
• Proteins provide :
Structural support
Transport substances
Enzymes to speed
reactions
Make hormones
Nucleic Acids- DNA and RNA
• Store and
communicate genetic
information
Nucleotidesmonomer
https://www.youtube.com/watch?v=nt9u7Cf
Voc
Activity
• Gather the Monomers( Building Blocks)
and build the Macromolecule (Polymer)
• You are building a starch, a protein, a
lipid, and a nucleic acid (DNA or RNA)
• On each of your index cards write the
function of each macromolecule and a few
examples of each.
• Be ready to present to the class
Exit Ticket
• For the following polymers name identify
the monomer:
Protein
Lipid
Nucleic Acids
Carbohydrates
Homework
• Create a chart with 4 polymers on one
side- Starch, Protein, Nucleic Acid, and
Lipid and their monomers or building
blocks on the other side.
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