Unit 3: Molecular Biology - Tan

5 classes



IB Topic




10/17 & 10/18



  • Membranes Test Results
  • Molecules to Metabolism Introduction
  • Anabolism vs catabolism
  • Urea use & synthesis


  • Molecular biology explains living processes in terms of the chemical substances involved
  • Carbon atoms can form four covalent bonds allowing a diversity of stable compounds to exist
  • LIfe is based on carbon compounds including carbohydrates, lipids, proteins, and nucleic acids
  • Metabolism is the web of all the enzyme-catalyzed reactions in a cell or organism
  • Anabolism is the synthesis of complex molecules from simpler molecules including the formation of macromolecules from monomers by condensation reactions
  • Catabolism is the breakdown of complex molecules into simpler molecules including the hydrolysis of macromolecules into monomers
  • Application: Urea is an example of a compound that is produced by living organisms but can also be artificially synthesized.
  • 2.1 Notes: Molecules to Metabolism

10/19 & 10/22



  • Quiz: 2.1 Molecules to Metabolism
  • Water & it’s importance
  • NYT Water Bottle Survey


  • Skill: Drawing molecular diagrams of glucose, ribose, a saturated fatty acid and a generalized amino acid.
  • Skill: Identification of biochemicals such as sugars, lipids, or amino acids from molecular diagrams.
  • Water molecules are polar and hydrogen bonds form between the Hydrogen bonding and dipolarity explain the cohesive, adhesive, thermal and solvent properties of water
  • Substances can be hydrophilic or hydrophobic
  • Application: Comparison of the thermal properties of water with those of methane.
  • Application: Modes of transport of glucose, amino acids, cholesterol, fats, oxygen and sodium chloride in blood in relation to their solubility in water.
  • Application: Use of water as a coolant in sweat.

  • 2.2 Notes: Water
  • Reading: Pg 40 (hydrogen bonds), 46-52

10/23& 10/24



  • Quiz: 2.2 Water
  • Water Crisis Presentations
  • Demonstration: Soluble (carbs/sugar) vs insoluble (lipid/butter)
  • Model Building Lab: Carbohydrates
  • Demonstration: Physical model building: Condensation & Hydrolysis, triglyceride formation

  • 2.3 video notes
  • Reading: Pg 68-77

10/29& 10/30



  • Quiz: 2.3 Carbs & Lipids
  • How to read scientific papers
  • BMI Evaluation Activity
  • BMI & Cancer
  • Review

  • Application: Scientific evidence for health risks of trans fats and saturated fatty acids.
  • Application: Evaluation of evidence and the methods used to obtain the evidence for health claims made about lipids.
  • Skill: Use of molecular visualization software to compare cellulose, starch and glycogen.
  • Skill: Determination of body mass index by calculation or use of nomogram.
  • Study for assessment

11/2 & 11/6





Evaluation Practice 1: Osmosis in Plant Tissues

Membranes retake deadline: 11/2