Biochemistry Unit Review

Master biochemistry! Review chemical bonds, water's power, macromolecules, and enzymes with this comprehensive unit guide.

Chemical Bonds Video Use the video to review and help answer the questions below (if needed) Atom Labeling Fill in the blanks on the image below. Key: Protons, Neutrons, Electrons Electrons Neutrons Protons What type of chemical bond is shown below? Covalent Ionic Hydrogen What type of chemical bond involves the sharing of electrons? Covalent Ionic Hydrogen Which best describes the atoms below? Different Elements Isotopes of the same element Isotopes of different elements Properties of Water Use the video to help answer the questions below, if needed. Draw a water molecule. Be sure to label O, H, +, and - parts of the molecules. Bonds of the Water Molecule Label the bonds indicated. Key: Hydrogen Bond, Covalent Bond Hydrogen Bond Covalent Bond Properties of Water Matching Match the property of water to its description Adhesion Water sticks to other substances. Cohesion Water molecules are attracted to other water molecules, forming hydrogen bonds. Capillary action Water moves up through narrow tubes (for example moving from the roots to leaves in plants) Surface Tension Some bugs may be able to walk on top of water. High Specific Heat Water resists changes in temperature. Expands when Frozen Ice floats on top of liquid water. Universal Solvent Many polar substances dissolve in water. pH Scale Labeling Key: Acids, Bases, Neutral Acids Neutral Bases Macromolecules Video Use the video to review and help answer questions below (if needed) Sort the descriptions under the appropriate macromolecule Carbohydrates Monomer = Monosaccharides Sugars Short-term Energy C,H,O (Ratio 1:2:1) Food = Pasta, Fruits, Vegetables, Bread, Chips Lipids Fats Monomer = Glycerol + Fatty Acids Stored Energy C, H, O (No Specific Ratio) Food = Oils, Butter Proteins Monomer = Amino Acids Enzymes Builds Muscle C,H,O,N Food = Meat, Beans, Nuts Nucleic Acids DNA RNA Monomer = Nucleic Acids Genetic Code Made of Sugar, Phosphate, and Nitrogenous Base C,H,O,N,P What element do all organic molecules contain? Carbon Nitrogen Phosphorus Enzymes Video Use the video to review and help answer the questions below, if needed. Sort the statements about enzymes into True categories. True Enzymes lower activation energy. Enzymes work because of their shape. Enzymes are catalysts. Enzymes work at an optimum temperature and pH. Enzymes can be reused. False Enzymes slow down chemical reactions. A single enzyme can work on many different types of substrates. Label the parts of the enzymatic reaction below. Key: Substrate, Products, Enzyme, Active Site Substrate Product Active Site Enzyme