BIO 224 FINAL EXAM QUESTIONS AND ANSWERS VERIFIED

BIO 224 FINAL EXAM QUESTIONS AND ANSWERS VERIFIED Chemistry of Water Properties of Water • Surface tension: The tendency of water molecules to stick together because of hydrogen bonding • Adhesion: Water molecules sticking to something other than water due to attrEanchtaionnceof charges • Capillary action: The tendency of water to move along the surface of a substance due to adhesion (water molecules “pull” each other up) • Cohesion: A special form of cohesion that causes the surface of the water to resist rupture (the reason why certain insects can walk on water) • Cohesion: Water can dissolve many substances due to the partial charges within the water molecule • Polarity: Water has partial positive and negative charges due to unequal sharing of electrons • Hydrophilic: Substances that dissolve in water (water-loving) • Hydrophobic: Substances that do not dissolve in water (water-fearing) • Universal solvent: Water can dissolve many substances due to the partial charges within the water molecule Chemistry of Life Organic Chemistry • The chemistry that studies carbon is organic chemistry • Proteins: Polymers of amino acids • Nucleic acids: Store and transmit genetic information • Polymer: Molecules made of many monomers • Triglycerides: Lipids formed when a glycerol molecule combines with 3 fatty acids • Unsaturated fats: Lipids with all single bonded carbons and found in butter and lard • Carbohydrates: Often plant oils made of C, H, and O, with at least one double bonded carbon • Polyunsaturated fats: Lipids whose fatty acids contain more than one double bond • Nucleic acids: Polymers of nucleotides Cell Transport and Homeostasis Organelles