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Name______________________________Hour______________________________Date______________________________Unit 2 (Ch. 6) Chemistry of Life Short Answer Test Review Be able to use a periodic table to make an atom drawing of any element with atomic #1-20. Include a key with the # protons, # electrons, # neutrons, atomic number, and atomic mass (mass number). Also, label the nucleus of the atom and an energy level in your anisms have different DNA, yet we are made of the same six common elements (list them): ______________________________________________________________________________These six common elements are used to build the four biological macromolecules known as: (1) _____________________________________, (2) __________________________________(3) _____________________________________, and (4) _______________________________.If all living organisms have the same six elements that make up their macromolecules, then what allows for differences among living things (list 2)?(1) ________________________________________________________________________________and (2) _____________________________________________________________________________.Compare and contrast covalent and ionic bonding (3 similarities & 3 differences).Covalent BondingBothIonic BondingDraw a picture of a water molecule (H2O) showing how the oxygen and hydrogen atoms in water bond together. Be sure to draw and label the atoms and electrons in your picture. Explain how the bonds are formed.Type of Bond _____________________________ Is water a polar or nonpolar molecule? Explain.Draw a picture of sodium chloride (NaCl) showing how the sodium and chlorine atoms in the compound bond together. Be sure to draw and label the atoms and electrons in your picture. Explain how the bond is formed.Type of Bond _____________________________Using the chemical reaction below, label the reactants and products.__________________________ _________________________4286259525000Do chemical bonds between atoms form in this chemical reaction? ___________________Do chemical bonds between atoms break in this chemical reaction? ___________________Are new molecules formed in this chemical reaction?____________________Are new atoms formed in this chemical reaction?____________________Matter cannot be created nor destroyed, only changed from one form to another is known as the law of ________________________________________________________.Do all chemical reactions follow this scientific law? ____________________Why couldn’t we live without enzymes? Explain the structure/function of enzymes and why they are important to living organisms. Enzymes are biological catalysts made out of _____________________________.Enzymes function to _____________________________________________________________.Provide a specific example of how enzymes function in a living organism.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A glycogen molecule is made from many repeating glucose molecules bonded together. Identify the name of the chemical reaction and describe using words and a picture how the reaction is responsible for breaking down glycogen into individual glucose molecules. Identify and label the reactants and the products in the reaction.Name of chemical reaction ___________________________________________________________Picture:Explain:Glucose (C6H12O6) and galactose (C6H12O6) are isomers that bond together to make milk sugar called lactose (C12H22O11). Identify the name of the reaction and describe using words and a picture how the chemical reaction is responsible for making lactose. Identify and label the reactants and the products in the reaction.Name of chemical reaction ___________________________________________________________Picture:Explain:Fill in the following macromolecules table.MacromoleculeElementsSubunits/Monomers/Building BlocksFunction(s)Examples (2 each)CarbohydratesLipidsProteinsNucleic Acids ................
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