PPT-Lecture 3. Physical and chemical properties of proteins. Denaturation.

Size Colloidal solutions Charge UV absorption Solubility Physical properties Molecular weight Vary from 6000 to million Daltons Da Protomeric proteins 50 000 to 100 . o. f Burns. Group: Deep Thought. Macro Level. Transfer of Heat in Biological Systems. Biological System?. Tissue. Skin. 3 layers:. A thin outer Epidermis. A thicker layer of Dermis. A thick subcutaneous fatty tissue (Hypodermis). Blue Color. Blue Color. Physical property. Density. Density. Physical property. Flammability. Flammability. Chemical property- The original substance is fundamentally changed. . Solubility- (dissolves into a liquid to make a solution). How to tell the difference. Physical properties. Inherent characteristics of a substance that can be determined without altering its composition. Associated with its physical existence. Color, taste, odor, state of matter (solid, liquid, or gas), density, melting point, boiling point.. Property. Is a description of an object. The tree is TALL. The tree is GREEN. If struck by lighting, the tree could catch FIRE (BURN). Physical Properties. Are determined by the use of the . . . . Science 9. Review: Physical Properties. Characteristics of substances that you can sense (touch, see, smell, etc.). These do not change the identity of the substance. Does NOT change . the identity. Chemical Properties. Vo, Blake . Tye. , and Allison Morley. Bioc. 463a Spring 2012. Denaturation of Alkaline Phosphatase by . u. rea at elevated temperatures. Objectives. Find the minimum temperature at which the addition of urea denatures alkaline phosphatase (AP). Denaturation of a protein occurs when the interactions of residues that stabilize tertiary or quaternary structures are disrupted, which destroys the shape and renders the protein biologically inactive.. Learning Targets. :. * Understand . denaturation . of protein . . * Tell . some of its causes and effects. Complete. protein comes from . animal. products. Incomplete. protein comes from the . SEEDS. Physical & Chemical Changes. © 2013 Michelle Brosseau, Mrs. Brosseau’s Binder. Matter is anything that has . mass. . and takes up . space. .. Chemistry is the study of matter and the changes it undergoes. . S8P1d. Distinguish between physical and chemical properties of matter as physical (i.e., density, melting point, boiling point) or chemical (i.e., reactivity, combustibility) How are physical and chemical properties different? Physical and Chemical Changes Physical and Chemical Properties Everything around us has physical and chemical properties. Physical Properties Characteristics you can observe without changing the substance into something new. and. Physical Properties. . Observations that . DO NOT CHANGE . the substance or mixture. Measure. See. Smell. Hear. Touch. Taste. Chemical Properties. Describes how the substance or mixture will react with another. Dissociation. Optical Activity. Solubility, Hydration and Swelling Power. Dissociation. Proteins, like amino acids, are amphoteric.. Depending on pH, they can exist as polyvalent (cations, anions or . Denaturation. Balance of forces. Consequences of denaturation. Effect of Temperature on Rate of Enzyme Action. rate. denaturant. Denaturation. Denaturation is a phenomenon that involves transformation of a well-defined, folded structure of a protein, formed under physiological conditions, to an unfolded state under non-physiological conditions..