IB Biology: Classification Key Predicted Exam Questions And Correct Answers

MetabolismAnabolism+catabolism. the chemical processes that occur within a living organism in order to maintain life. Enzymatic Reactions inside a living organism CarbonCarbon is an element with the atomic number 6, meaning it has four electrons in its outer shell. These electrons can form covalent bonds with carbon atoms or atoms of other elements. This allows a diversity of stable compounds to exist. LipidsA diverse group of Carbon containing macromolecules made up of carbon, hydrogen, and oxygen(but does not have a 2:1 ratio of h:o like carbs. Some examples include fat(solid at room temperature), and oil(liquid at room temperature) Steroids, triglycerides, and phospholipids. The monomer of a lipid are Fatty Acids. Lipids store more energy than carb per gram, 17 kj/g vs fats 37 kj/g. Means better for long term energy storage