Molecules of Life (until Proteins) PDF

MOLECULES OF LIFE Foundational Concepts (Worksheet no. 2) What are Lewis structures and what are they used for? What is the importance of valence electrons? Define the following types of chemical bonds ○ Ionic bonds ○ Hydrogen bonding ○ Van der Waals Force Foundational C...

MOLECULES OF LIFE Foundational Concepts (Worksheet no. 2) What are Lewis structures and what are they used for? What is the importance of valence electrons? Define the following types of chemical bonds ○ Ionic bonds ○ Hydrogen bonding ○ Van der Waals Force Foundational Concepts: Lewis Structures Shows how electrons are arranged Simplified representation of valence electrons ○ Valence electrons: outermost electron shell Shows bonding between atoms Determine the type of chemical bonding in the following Ionic, Covalent or Metallic CARBON: THE BACKBONE OF LIFE CARBON: The Backbone of Life Macromolecules made up of carbon- chains with other elements such as Hydrogen (H), Nitrogen (N), Oxygen (O), Sulfur (S), Phosphorus (P) etc CARBOHYDRATES CARBOHYDRATES Monomers: monosaccharides Disaccharides Polysaccharides CARBOHYDRATES: Monosaccharides General molecular formula: CH2O Functional Groups: o Carbonyl group (C=O) o Hydroxyl group (—OH) CARBOHYDRATES: Monosaccharides CARBOHYDRATES: Disaccharides Disaccharides are connected by glycosidic linkages (covalent bond) formed by a dehydration reaction CARBOHYDRATES: Polysaccharides CARBOHYDRATES: Polysaccharides Structural CARBOHYDRATES: Polysaccharides Storage CARBOHYDRATES: Polysaccharides Structural STRUCTURE- FUNCTION CORRELATION Structural Cellulose Chitin Storage Amylose Amylopectin Glycogen PROTEINS PROTEIN PROTEIN PROTEIN: Amino Acids Protein monomers PROTEIN: Polypeptides Peptide Bond ○ The bond joining two amino acids PROTEIN: Polypeptides Each sequence has a free amino group (N-terminus) and a free carboxyl group (C-terminus) PROTEIN: Amino Acids PROTEIN: Structure PROTEIN: Structure (Hemoglobin) Onsite Activity: 11 October 2024 Laboratory Activity: MICROSCOPE For online students ONLY: https://www.ncbionetwork.org/iet/microscope/ ○ Different worksheet will be given to pure online students