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Nutrition Ch.6
Proteins
Question | Answer |
---|---|
Proteins | Made of amino acids |
Structure of an amino acid | Amine group (NH)on one side, Carbons in the the middle and an acid group on the other end |
9 Essential Amino Acids | Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, Valine, Alanine, and Arginine |
Conditionally essential amino acids | Requires another amino group to be made by the body |
Peptide Bond | The link between the acid group of one amino acid and the amine group of another amino acid |
Dipeptide | Two amino acids joined together |
Tripeptide | Three amino acids joined together |
Oligopeptide | 4 to 10 amino acids joined together |
Polypeptide | 11 or more amino acids joined together |
Denaturation | Disruption of a protein 3-D shape |
Acid | Compounds that release H+ (such as HCL, HNO3)that can denature proteins |
Base | Compounds that joins H+ |
pH | A log measure of the amount of H+ |
Buffer | A compound that helps maintain a stable pH |
Collagen | Thick strong fiber in connective tissue |
Enzymes | Proteins that cause reactions to occur |
Antibodies | Proteins that attach to antigens as a signal for the immune system to destroy that antigen |
Antigens | Any substance that can case an immune response, mostly proteins |
Hormones | Compounds that are made by glands then are released into bloodstream to affect other cells, a lot are protein |
Cell Membrane Structure | Two layers of lipids w/ proteins shattered thru out |
Transferrin | Protein that carries iron from the liver to the bone marrow |
Fibrin | A protein fiber that traps blood cells to form a clot |
Opsin | A protein that make up a part of the visual molecule in the retina |
Neurotransmitter | A compound released at the end of a neuron to stimulate the next cell |
Complete Protein | Contain all the essential amino acids, animal proteins |
Incomplete Protein | Does not contain all 9 essential amino acids, vegetable/ fruit proteins |
Biological value | The percentage of nitrogen in a protein that is absorbed and retained and used |
PEM (Protein Energy Malnutrition) | Means the person are not getting enough proteins and calories |
Marasmus | Starvation |
Kwashiorkor | Severe protein deficiency, fluid/water imbalance, swelling |
Dysentery | Severe diarrhea |
Aflatoxin | Mold toxins; inhibits protein synthesis, cause cancer, found on nuts and grains |
Edema | Swelling |
Recommend protein intake | 10 to 15% of daily calories |
Tofu | Soybean curred |
Functions of Proteins | Fibers, enzymes, antibodies, hormones, receptors, and channels |
Primary shape of protein | String of amino acids |
Secondary shape of protein | Coil or a flat sheet |
Tertiary shape of protein | Folded coil or sheet |
Quaternary shape of protein | 2 or more proteins combined together |