brief overview of protein for a high school biology class

1. Protein

2. Protein
•control chemical processes (like
enzymes & hormones)

3. Protein
•control chemical processes (like
enzymes & hormones)
•part of the immune system
(antibodies)

4. Protein
•control chemical processes (like
enzymes & hormones)
•part of the immune system
(antibodies)
•used to build body tissues

5. Examples:
keratin – protein that makes up hair and fur

6. Examples:
keratin – protein that makes up hair and fur
thyroxine – protein that speeds up the metabolism
and keeps body temperature normal even when it’s
cold outside

7. Examples:
keratin – protein that makes up hair and fur
thyroxine – protein that speeds up the metabolism
and keeps body temperature normal even when it’s
cold outside
lactase – enzyme that digests lactose (milk sugar)

8. Examples:
keratin – protein that makes up hair and fur
thyroxine – protein that speeds up the metabolism
and keeps body temperature normal even when it’s
cold outside
lactase – enzyme that digests lactose (milk sugar)
collagen – protein that gives tendons, ligaments, and
skin strength and elasticity

12. Amino Acids
•the building blocks of protein

13. Amino Acids
•the building blocks of protein
•there are about 20 different kinds in human
proteins

14. Amino Acids
•the building blocks of protein
•there are about 20 different kinds in human
proteins
•typical protein molecule is
made up of 5000-10,000
amino acids in a chain

16. Complete Protein
•the human body can make about 12 of the amino
acids it needs
•the other eight cannot be synthesized and have to
be ingested
•“complete” proteins
contain all the essential
amino acids in about the
right proportions
•“incomplete” proteins are lacking, or have low
levels of, one or more of the essential amino acids
these are the
ESSENTIAL AMINO ACIDS

17. Vegetarian vs. Vegan

18. Vegetarian vs. Vegan
no meat but
does eat milk
and/or eggs

19. Vegetarian vs. Vegan
no meat but
does eat milk
and/or eggs
no animal
products at all

20. •combine plant groups to
get all the essential
amino acids
•eat a variety of foods
•eat them within a day or
two to get the right
combinations of amino
acids
To get complete protein without eating animal products:
Some plant products do have complete proteins like soybeans, for example.

21. that’s it!