Download Food Labels

Food Labels
• All living things use materials
and energy
• Our food comes from living
things
• The food labels we see show
us what our food is made of
• The stuff we are studying
today can be found on food
labels
The molecules of life
• The molecules that
make up living things
are really big
• They are called
macromolecules
IMPORTANT VOCAB!!
• These BIG molecules are called polymers.
• They are made up of simple, repeating
units called monomers
just
1
Monomers and Polymers
monomer
just
1
polymer
Monomers and Polymers
polymer
monomer
just
1
Quick Checks
• Monomer (A) or Polymer (B)?
Quick Checks
• Monomer (A) or Polymer (B)?
Quick Check
• Monomer (A) or Polymer (B)?
Playlist with
lots of
songs
Quick Check
• What is another example of a polymer
made up of many monomers?
• Think quietly to yourself for 30 seconds
• Write your idea on your whiteboard
• Pair up with your neighbor
– Make sure you have DIFFERENT answers
• Share with the class
Identifying the 4 Organic
Macromolecules
1. Carbohydrates
These are BIG molecules macromolecules
They are polymers made up of
many simple, repeating
monomers
The monomers of carbohydrates
are…
SUGARS called monosaccharides!
Quick Check - Whiteboards
• A carbohydrate…is it a monomer (A) or a
polymer (B)?
Quick Check - whiteboards
• Simple sugar - monosaccharide…is it a
monomer (A) or a polymer (B)?
Practice Drawing it - whiteboards
• Try drawing a
MONOMER of
carbohydrates
• Write the name of the
monomer next to its
picture
• Add it to your notes
• Try drawing a
carbohydrate
Carbohydrates
• The building blocks (monomers) of
carbohydrates are simple sugars like
glucose, galactose, and fructose
carbohydrates
Monomer: Simple Sugar
Compound: Carbohydrate
Identifying the 4 Organic
Macromolecules
2. Proteins
• These are also BIG
macromolecules.
• On your whiteboards:
– Draw what you think 1 monomer of
this macromolecule looks like
• They are also made up of many
simple repeating monomers
called amino acids
• Try drawing a monomer of
proteins – write it’s name next to
it
• Add it to your notes
Proteins
Monomer: 1 amino acid
Compound: Protein (a chain of
amino acids)
Identifying the 4 Organic
Macromolecules
3. Lipids
Try drawing the monomers
of a lipid
Compare with a neighbor…
The monomers of lipids have
2 parts:
A glycerol and 2 fatty acid
chains
Lipids
• The building blocks of lipids are glycerol
and fatty acids.
Quick Check
• The monomers of lipids have 2 parts…
• On 1/2 of your whiteboard, draw 1 monomer and
label its 2 parts
• On the other 1/2, draw a lipid polymer
• Compare with a neighbor
• Hold up
• Add the monomer and its names to your notes
Lipids
Monomer: glycerol + fatty acid chains
Compound:
fats, oils,
waxes
Identifying the 4 Organic
Macromolecules
4. Nucleic Acids (DNA)
These are very big
macromolecules
Try drawing one monomer
careful! - it has 3 parts!
The monomers of nucleic
acids are called
nucleotides
Nucleic Acids
• Each nucleotide monomer has 3 parts:
– A sugar
– A phosphate group
– A nitrogen base
Nucleic acids
Monomer: 1
nucleotide
Add a picture
of the
monomer
and it’s
names to
Compound: nucleic acid (RNA)
your notes
Who has the organic compounds?
• ALL living things have all four organic
compounds
– Carbohydrates are used for energy and
all living things need energy
– Lipids are found in cell membranes (and
all living things have cells)
– Proteins are the products of the cell
– Nucleic acids – all living things have
DNA
So do you get it?
• Your goal was to be able to name, identify,
and draw the 4 macromolecules and their
monomers.
• Let’s see if you can do it.
On whiteboards…write it and hide it
• Monomer or polymer?
On whiteboards…write it and hide it
• What macromolecule is this?
On whiteboards…write it and hide it
• What is the name of the monomers of this
macromolecule
On whiteboards…write it and hide it
• What macromolecule is this?
On whiteboards…write it and hide it
• What are its monomers?
On whiteboards…write it and hide it
• What are the monomers of this
macromolecule (hint: has 2 parts)?
On whiteboards…write it and hide it
• What macromolecule is this?
On whiteboards…write it and hide it
• What are the macromolecule is this?