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Proteins

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by

Casey Brennan

on 6 February 2013

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Transcript of Proteins

As important to life as notes are to music. Proteins Organization of Organisms Proteins are essential to life Protein Shape Protein Categories Protein Categories Protein Categories Protein Categories Organism They are made of elements C, H, O, and N Proteins are long polymers made of
monomers called amino acids Enzymes Structural Hormones Storage Organs Tissues Cells Organ Systems Compounds Carbohydrates
Lipids Nucleic Acids
Proteins Elements There are thousands of types with different shapes sizes and functions Proteins differ from each other in two ways:
1) the length of the polymer chain
2) the sequence of amino acids Control chemical reactions in living organisms
Build and breakdown other molecules
Reaction specific
A different enzyme for every reaction AND they are reusable Examples
DNA polymerase Amylase (in saliva) Builds DNA Starts digestive process Forms rigid or flexible structural materials Things like: Hair
Muscles and tendons
Nails
Feathers
Horns Chemical messengers that direct long term changes in the body Examples:
Insulin
Adrenaline
Growth Hormone
Follicle-stimulating hormone Example:
Ferritin- stores iron
Ovalbumin- in egg whites
Casein- in milk and a source of amino acids for baby animals Protein Categories Transporters of Materials Helps to move materials throughout an organism’s body Examples:
Hemoglobin:
oxygen
Albumin:
Fatty acids, steroids,
and thyroid hormones
Transferrin:
iron Protein Categories Protective Protects an organisms body from foreign invaders (bacteria, viruses, other cells) by attacking the invader Examples:
Antibodies Gamma Globulin Protein Categories The "other" category Contains things like pigments, venom, spider web, arthropod skeletons Section A question 1
What are general functions of proteins? Control rate of reaction
Regulate cell processes
Form bones and muscles
Transport substances
Fight disease What functions do enzymes carry out? Section A Question 5: Section B Question 4:

What was the most important information in this paragraph? Section C Question 1
What does insulin do? Regulate level of glucose in blood Section B Question 6:
What are three plasma proteins? Albumins, Globulins, & Fibrinogen Section B Question 6:
What does each plasma protein do? Albumin: regulate osmotic pressure and blood volume
Globulin: fight infection
Fibrinogen: clots blood 1) Speed up chemical reactions that take place in cells
2) Lower the amount of energy needed to start a chemical reaction
Full transcript