AP Biology Unit 1 Test Study Guide with Complete Solutions
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Module
AP Biology
Institution
AP Biology
AP Biology Unit 1 Test Study Guide with
Complete Solutions
water - Answer️️ --polar molecule
-polar colvalent bonds
-oxygen end is partial negative and the hydrogens have a partially positive end
-cohesive
polar covalent bonds - Answer️️ --opposite ends of the molecule have opposite
...
hydrophilic - Answer✔️✔️--some molecules have an affinity for water
-polar and ionic molecules
-ex: cotton, cellulose, paper
hydrophobic - Answer✔️✔️--some substances do not have an affinity for water
-nonpolar and non ionic substances
-ex: fat, glycerol, oils
floats - Answer✔️✔️--less dense when it is solid, water ______
-forms crystal lattice structure
-important because oceans and lakes do not freeze solid
~insulates water below
~seasonal turnover of lakes
specific heat - Answer✔️✔️--the amount of heat that must be absorbed or lost for 1g to
change its temperature by 1C
-water had high _____ due to H bonding
-resists change in temp
-moderates temp on earth
evaporative cooling - Answer✔️✔️--organisms use to regulate their temperature
-ex: sweating
-water evaporates through a surface, cooling occurs
acidic - Answer✔️✔️-If [H+]>[-OH]
basic - Answer✔️✔️-If [-OH]>[H+]
pH scale - Answer✔️✔️--how acidic or basic a solution is
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