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Unit 6 Biochemistry II

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Simon Fraser University
Biological Sciences
BISC 101
Derek Bingham

Unit 6 – Biochemistry II 1 Objective 1 – Specify the major elements that make up protein molecules.  Will always have carbon, hydrogen, oxygen, nitrogen, may have sulfur and phosphorus  Amino acids = building blocks (monomers) of proteins o Amino acids combine to form more complex molecules. o Dipeptide = two amino acids o Polypeptide = more than two amino acids  All protein consists of one or more polypeptides arranged in various ways  At least 20 different amino acids found in proteins  3D structure of polypeptides Objective 2 – Describe six major functional groups of proteins, using examples.  Proteins are in charge of a majority of the structure of cells and tissue and are related to many physiological activities. Type of Protein Function Example Keratin in the skin, hair, fingernails Structural Forms structural framework of various parts of the body Collagen in connective tissue Hormones and regulates various Regulatory physiological processes Insulin (regulates blood sugar levels) Contractile Serve as contractile elements in Myosin and actin muscles Serves as antibodies to protect the Immunological Gamma globulin body against invading microbes Transport vital substances Hemoglobin (transports O2and Transport throughout the body some CO in the blood) 2 Catalytic Acts as an enzyme and functions in Salivary amylase, lipase, lactase regulating biochemical reactions Objective 3 – Specify the major elements that make up nucleic acids.  Very large organic molecules  Contains carbon, hydrogen, oxygen, nitrogen, and phosphorus  Found
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