1. Date: October 19, 2016
Aim #17: What functions do lipids serve to living things?
HW:
Test Corrections due Friday
Textbook HW due day of test!
Do Now:
What are lipids made up of?
What is another term for lipids?
Name 3 functions of lipids in living things.
Differentiate between saturated and unsaturated fats.

2. What is another category of organic molecules?
Proteins

3. 1) Proteins have many functions:
Proteins are enzymes,
found in cell membrane,
make up antibodies, and
much more

4. 2) What are the building blocks of proteins?
Proteins are made up
of polymers of
amino acids
Elements: C, H, O, N

5. 3) How many amino acids are there?
There are only 20 amino acids, but there are millions of different types of proteins.

6. 4) How do we build proteins?
Dehydration
Synthesis
A PEPTIDE BOND is formed

7. 5) What are Polypeptides?
Polypeptides are chains of amino acids
Polypeptides is another name for proteins

8. 6) What determines protein shape?
The sequence (order) of amino acids in a
protein determine its shape
2) The shape of a protein determines its function

9. 7) What does Denaturation mean?
An unfavorable change in
temperature, pH, or some
other quality of the
environment can cause a
protein to unravel and
lose its normal shape
Denatured proteins do not function properly!

10. 8) What are types of proteins in our bodies?
Hemoglobin- carries oxygen in our blood

11. 8) What types of proteins are in our bodies?
Hormones-chemical messengers
Example:
insulin-decreases blood sugar level by making cells take in glucose

12. 8) What are types of proteins in our bodies?
Antibodies- defend body against disease

13. 11) What are types of proteins in our bodies?
Collagen-most abundant protein in mammals
Main component of connective tissue
Supports most tissues and gives cell structure from the outside
Main component of cartilage, ligaments, tendons, bones, and teeth
Gives skin strength and elasticity
Strengthens blood vessels
Used in cosmetic surgery and burn treatment

14. 8) What are types of proteins in our bodies?
Enzymes- control metabolic activities

15. 8) What are types of proteins in our bodies?
Cell Receptors- involved in cell communication