Transcript Proteins

2–3 Carbon Compounds
Do Now!!!
• Copy homework into agenda
• Have your homework on your desk for
me to check
• When your body breaks down
carbohydrates, what monomers are
formed?
– Why does your body need carbohydrates?
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2–3 Carbon Compounds
Announcements
• Complete notes on Protein
• Complete notes for Levels of
Organization
• Review Homework for Friday
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2–3 Carbon Compounds
Proteins
Proteins
Proteins are macromolecules that contain
nitrogen, carbon, hydrogen, and oxygen.
• Monomers of protein are called amino acids.
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Proteins
Amino acids There are 20 different types of
Amino Acids. What makes them different?
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2–3 Carbon Compounds
Proteins
The portion of each amino acid that is different is a
side chain called an R-group.
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2–3 Carbon Compounds
Proteins
The instructions for arranging amino acids into many
different proteins are stored in DNA.
Protein
Molecule
Amino
Acids
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2–3 Carbon Compounds
Proteins
Functions of proteins:
–Proteins called enzymes control rate of
reactions
–Used to form bones and muscles
–Transport substances into or out of
cells
–Help to fight disease - antibodies
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2–3 Carbon Compounds
• Pull out your notes from “Macromolecules
Guided Notes” (Tuesday)
• Review Homework for Friday
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2–3 Carbon Compounds
Complete the Protein section
of the weekends homework (if
not already done)
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2–3 Carbon Compounds
Exit Slip
Remember my cat Toby?
The vet has recommended
that my cat be on a high
protein, low fat, low
carbohydrate diet. Why
would he encourage this
diet, for my lazy fat cat?
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2–3
Click to Launch:
Continue to:
- or -
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2–3
Large carbohydrate molecules such as starch
are known as
a. lipids.
b. monosaccharides.
c. proteins.
d. polysaccharides.
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2–3
Many lipids are formed from glycerol and
a. fatty acids.
b. monosaccharides.
c. amino acids.
d. nucleic acids.
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2–3
Which of the following statements about
cellulose is true?
a. Animals make it and use it to store energy.
b. Plants make it and use it to store energy.
c. Animals make it and use it as part of the
skeleton.
d. Plants make it and use it to give structural
support to cells.
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2–3
A major difference between polysaccharides and
proteins is that
a. plants make polysaccharides, while animals
make proteins.
b. proteins are made of monomers, while
polysaccharides are not.
c. polysaccharides are made of
monosaccharides, while proteins are made
of amino acids.
d. proteins carry genetic information, while
polysaccharides do not.
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END OF SECTION