Unit 2: Biochemistry Review

Properties of Water Review Label the charges (+ or -) on the Oxygen and Hydrogen atoms and Draw hydrogen bonds connecting the 3 water molecules. Use the following "clues" and "word bank" provided below to complete your water crossword puzzle. Use your "pen tool" or "A" tool to type a letter in each box. Across3. Transportation of water and nutrients in plants against the force of gravity.4. Substances that have a pH more than 75. Bond between oxygen and hydrogen of a water molecule6. Water is _, as it has a slight positive charge.8. Bond between oxygen of one water molecule and hydrogen of another water molecule9. Water molecules sticking to each other forming a water droplet10. cohesion and adhesion working together allowing paper clips to float on water.11. Substances that have a pH 7Down1. Substances that have a pH less than 72. Waters ability to stick to many substances and dissolve them.7. Water molecules sticking to other stuffWORD BANKPolar; Surface Tension; Cohesion; Adhesion; Capillary Action; acid; base; neutral; Polar Covalent Bond; Hydrogen Bond; Universal Solvent Water being a polar substance, dissolves _ substances. Only polar substances Only non-polar substances It dissolves all substances Sort the following as "organic" vs "inorganic" Organic Carbohydrates Lipids Proteins Inorganic Water Macromolecules Fill in the blank by clicking on each square and choosing the correct word(s). Macromolecule Monomer Function Example Carbohydrate Monomer: monosaccharide Function: short-term energy Examples: bread, pasta fruits Lipid Monomer: glycerol + fatty acids Function: long-term energy source insulation Examples: butter and oil Nucleic Acid Monomer: nucleotide Function: store and transfer genetic information Examples: DNA and RNA Protein Monomer: amino acid Function: build muscle Examples: meat and beans Which of the following are carbohydrates? monosaccharides disaccharides polysaccharides All of the above What is the dependentvariable on this graph? pH salivary amylase enzyme activity pepsin What is the independentvariable on this graph? pH salivary amylase enzyme activity pepsin What is the optimum (best)pH of pepsin? 2 7 5 9.75 Which enzyme works best at a neutralpH? pepsin salivary amylase arginase none of these