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An in-depth exploration of biomolecules, their structure, function, and roles in living organisms. It covers organic and inorganic molecules, the four major groups of biomolecules (carbohydrates, lipids, proteins, and nucleic acids), their functions, and the structure of dna and rna. It also delves into protein synthesis, enzymes, antibodies, transporters, and the levels of protein structure.
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Organic - Contains a backbone of carbon and hydrogen. Found in living organisms more than inorganic. Inorganic - Contains either C or H, or do not have these elements. Found in living organisms not as much as organic molecules. Biomolecules - Compounds produced by living organisms. Atom - Tiny particle of matter that cannot be subdivided into smaller particles without losing matter properties. Molecule - Two or more atoms bonded together. Macromolecules - Living organisms combine smaller molecules. Macromolecules can contain different types of biomolecules. Four Major Groups of Biomolecules - Carbohydrates, lipids, proteins, nucleic acids. Carbohydrates - Important in structure and as an energy source in living organisms. Ribose - Monosaccharide found in RNA. Deoxyribose - Monosaccharide found in DNA. Lactose - Glucose + (glycosidic linkage) + galactose Sucrose - Glucose + (glycosidic linkage) + fructose found in plants and in cane sugar Cellulose - Polysaccharide of glucose that forms plant's cell walls Glycogen -
Energy storage in animals, fungi, and bacteria Starch - A storage polysaccharide in plants consisting entirely of glucose Carbohydrate Structural Functions - Cellulose - cell wall of plants and some microorganisms; Peptidoglycan - support cell wall of bacteria (polypeptides + carb); Lipopolysaccharides - present in cell wall of bacteria (lipid + carb) Carbohydrate Protective Functions - Capsule of some bacteria are made of polysaccharides; Can be antibodies - produced by beta cells Triglycerides - Storage role (superior sources of energy) Saturated Triglycerides - In animal products, not branched and are solid at room temperature Unsaturated Triglycerides - Liquid at room temperature and found in food products (olive oil); Branched Carbohydrate Energy and Nutrient Source Functions - Glycogen Phospholipids - Structure and Function of Membrane; Amphipathic Cholesterol - Reinforces Membranes in Animals and Mycoplasmas Ergosterol - Part of Membrane of Fungi What is Used to Determine a Single Amino Acid in a Protein? - A Codon (3 Bases) Proteins - Both Structural and Functional. Can Form Macromolecules with Lipids (Lipoproteins) and Carbohydrates (Glycoproteins). Play Many Different Roles in Living Organisms Including Catalyzing Chemical Reactions (Enzymes) and Allowing Transmembrane Communication (Transporters). Made of Amino Acids Bonded by Covalent Peptide Bonds. Structural and Functional Role Protein Synthesis Occurs on Ribosomes Mediated by - mRNA, tRNA, rRNA Enzymes - Catalysts of Chemical Reactions in Living Organisms
Phospholipid Bilayer - Double layer of phospholipids that makes up cell membranes, with hydrophilic heads facing outward and hydrophobic tails facing inward Gene Expression - Process by which information from a gene is used to synthesize a functional gene product like proteins