Chemistry of life review

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Presentation transcript:

Chemistry of life review

Atoms, Ions and Molecules What is the relationship between atoms and elements? What is an ion? Why do they form? How do ionic and covalent bonds differ? How would you draw a sodium atom? How would you draw a sodium ion? What is another name for a hydrogen ion?

Properties of Water What is a hydrogen bond? What 3 important properties of water are related to hydrogen bonding? What is the relationship between solutes and solvents? How is the concentration of hydrogen ions related to whether something is classified as an acid or base?

Macromolecules What are the 4 main classes of macromolecules?

List the MONOMER for each POLYMER Lipid Carbohydrate Protein Nucleic Acid

Answers: List the MONOMER for each POLYMER Lipid- fatty acids Carbohydrate- monosaccharide/simple sugar Protein- amino acid Nucleic Acid- nucleotide

Chemical Reactions When is a reaction said to be at equilibrium? Exothermic Endothermic Activation energy

Enzymes How are enzymes and catalysts related? What is the function of enzymes? How are substrates and enzymes related? Enzymes speed chemical reactions under tightly controlled environments Substrate: specific reactant that an enzyme acts on Substrate temporarily binds to active site on enzyme, enzyme weakens the bonds(lowers activation energy) in substrate and a new product is released

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