PPT-Ribozymes: RNA Enzymes - Function & Role

Pamela Osborn Overview What are ribozymes Background Structure Hairpin Hammerhead and RNase P Future applications Function amp Role of ribozymes within the body Mechanism Role of metals in catalysis amp . Chapter 2: Section 2.5. 1. Objectives. SWBAT explain the effect of a catalyst on activation energy. . SWBAT describe how enzymes regulate chemical reactions. . and maintain homeostasis.. 2. Starter: How can this be possible. Warm up. Grab warm up and complete. We will be putting this into your . journal. When you are done with your warm up look over your Vocab 1-1, you have a . quiz today. Biomolecule review. Cellulose, a structural component of the cell wall of plants and some forms of algae, is mainly used to produce paper and cardboard products. Cellulose would be an example of which type of biomolecule. Enzymes speed up chemical reactions.. Everything that happens in a cell. Growth. Reproduction. Interaction with the environment. Response to stimuli. Is the result of a chemical reaction.. A chemical reaction is a change in the arrangement. Structure and function are closely related!. Change the structure = cannot function. Examples:. . Red blood cells . – sickle cell anemia- round shape allows them to fit through blood vessels. Muscle cells . . ASHA S . V. BCH-10-05-05. Ribozyme. , or RNA enzyme, is a RNA molecule that act as enzymes, often found to catalyze cleavage of either its own or other RNAs.. IMPORTANCE. OF ENZYMES. Enzymes are biological catalysts that:. . I. ncrease. . reaction rates . by lowering the amount of energy needed for the reaction to occur. 100-1000x . faster. !!!. Activation Energy. 1. What are enzymes?. Each enzyme has only one specific reaction it can perform. . 2. How many different reactions can a single enzyme perform?. Yes, the same enzyme molecule can be used over and over. protein. !. Enzymes are . Biological . catalysts . that . increase. . the rate of metabolic reactions.. Since enzymes speed up chemical reaction rates, what are they called?. Catalyst- . A substance . Anabolism vs Catabolism. What is necessary for a chemical reaction to begin?. Reactant(s) must come together in the right orientation. With enough energy. So ho do enzymes catalyze this process?. Lowers activation energy. Restriction enzymes. Polymerase enzyme. Strand-displacing polymerases. Helicase enzymes. Discovery and Obtainability:. Most enzymes are proteins discovered in cells.. But . DNAzymes. were . descovered. Enzymes. Back when we discussed proteins, we learned that one critical function of protein was to speed up chemical reactions.. Enzymes. are the proteins that increase the rate of chemical reactions. Please take out your two column notes from last class for a homework check . Learning Intentions. Identify the pancreas as a source gland for insulin, and describe the function of insulin in maintaining blood sugar levels. . that . catalyze. (. i.e.. , . increase or decrease the rates. of) . chemical reactions. .. . In enzymatic reactions, the . molecules. at the beginning of the process are called . substrates. , and they are converted into different molecules, called the . Objective: BIO.A.2.2.3: Compare and contrast the structure and function of carbohydrates, lipids, proteins, and nucleic acids in organisms. . Objective: To describe the function of . enzymes . inside living things.