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AP Biology Unit 1 Test (Answered) 86 Questions and Correct Answers, 100% Correct. Updated Fall 2024/2025. £10.69   Add to cart
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AP Biology Unit 1 Test (Answered) 86 Questions and Correct Answers, 100% Correct. Updated Fall 2024/2025.
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AP Biology Unit 1 Test (Answered) 86 Questions and Correct Answers, 100% Correct. Updated Fall 2024/2025.

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  • August 23, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ap biology unit 1 test answered 86 questions and

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  • AP Biology
  • AP Biology

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AP Biology Unit 1 Test (Answered) 86
Questions and Correct Answers, 100%
Correct. Updated Fall 2024/2025.
water

-polar molecule
-polar colvalent bonds
-oxygen end is partial negative and the hydrogens have a partially positive end
-cohesive

polar covalent bonds

-opposite ends of the molecule have opposite charges

cohesion

-H bonding between H2O creates it (sticky)
-allows for the movement of water against gravity
-high surface tension
-water moves up a tree by transpiration (helped by ____)

adhesion

-H2O molecules form H bonds with other substances
~capillary action
~meniscus
~water climbs up fiber

solvent

-water is the universal one
-polar water molecules will surround the (+) and (-) ions causing the ions to separate and dissolve
-dissolve solutes and create aqueous solutions

hydrophilic

-some molecules have an affinity for water
-polar and ionic molecules
-ex: cotton, cellulose, paper

hydrophobic

-some substances do not have an affinity for water
-nonpolar and non ionic substances
-ex: fat, glycerol, oils

, floats

-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

-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

-organisms use to regulate their temperature
-ex: sweating
-water evaporates through a surface, cooling occurs

acidic

If [H+]>[-OH]

basic

If [-OH]>[H+]

pH scale

-how acidic or basic a solution is
-pure water, only 1 molecule in every 554 million is dissociated
-most biological fluids have 6-8
-each unit represents a 10-fold difference in H+ and -OH concentrations

neutral

-If concentration of 2 ions is equal

carbon

-all life mostly based on this element
-important due to its electron configuration
~able to make 4 stable covalent bonds (tetra valence)
~very versatile
-tetravalence allows them to be strung together in chains

hydrocarbons

-combinations of C and H
-nonpolar

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