Bio 101 NVCC Exam 1 TEST QUESTIONS WITH 100%
VERIFIED SOLUTIONS
Ability to moderate temperature - ANSWER The property of water that
causes cities near large bodies of water to be cooler than cities that are
inland
high specific heat - ANSWER A property of water. Water can absorb
lots of heat before changing temperature
high heat of vaporization - ANSWER many hydrogen bonds must be
broken for water to evaporate
evaporative cooling - ANSWER The process in which the surface of an
object becomes cooler during evaporation, a result of the molecules
with the greatest kinetic energy changing from the liquid to the gaseous
state.
Expansion upon freezing - ANSWER ice floats in water because
hydrogen bonds in ice are more "ordered" making ice less density
versatility as a solvent - ANSWER The property of water that allows it
to dissolve polar substances
,Solvent - ANSWER A liquid substance capable of dissolving other
substances
Solutes - ANSWER substance dissolved in a solution
aqueous solution - ANSWER a solution in which water is the solvent
Hydrophilic - ANSWER Attracted to water
Hydrophobic - ANSWER Having an aversion to water; tending to
coalesce and form droplets in water.
pH scale - ANSWER - measurement system used to indicate the
concentration of hydrogen ions (H+) in solution; ranges from 0 to 14
- acidic < 7
- basic > 7
- most biological fluids range from 6-8
Acids - ANSWER compounds that form hydrogen ions when dissolved
in water
Bases - ANSWER Compounds that reduce the concentration of
hydrogen ions in a solution.
, buffer system - ANSWER - the internal pH of most living cells must
remain close to pH 7
- minimize changes in concentration of H+ and OH- in a solution
- contain a weak acid and a corresponding base
organic molecules - ANSWER molecules that contain carbon
Hydrocarbons - ANSWER Compounds composed of only carbon and
hydrogen
carbon skeleton - ANSWER The chain of carbon atoms that forms the
structural backbone of an organic molecule.
Isomers - ANSWER Two different molecules that have the same
chemical formula
Functional group - ANSWER A specific configuration of atoms
commonly attached to the carbon skeletons of organic molecules and
involved in chemical reactions.
- Hydroxyl
- Carbonyl
- Carboxyl
- Amino
- Sulfhydryl
- Phosphate
VERIFIED SOLUTIONS
Ability to moderate temperature - ANSWER The property of water that
causes cities near large bodies of water to be cooler than cities that are
inland
high specific heat - ANSWER A property of water. Water can absorb
lots of heat before changing temperature
high heat of vaporization - ANSWER many hydrogen bonds must be
broken for water to evaporate
evaporative cooling - ANSWER The process in which the surface of an
object becomes cooler during evaporation, a result of the molecules
with the greatest kinetic energy changing from the liquid to the gaseous
state.
Expansion upon freezing - ANSWER ice floats in water because
hydrogen bonds in ice are more "ordered" making ice less density
versatility as a solvent - ANSWER The property of water that allows it
to dissolve polar substances
,Solvent - ANSWER A liquid substance capable of dissolving other
substances
Solutes - ANSWER substance dissolved in a solution
aqueous solution - ANSWER a solution in which water is the solvent
Hydrophilic - ANSWER Attracted to water
Hydrophobic - ANSWER Having an aversion to water; tending to
coalesce and form droplets in water.
pH scale - ANSWER - measurement system used to indicate the
concentration of hydrogen ions (H+) in solution; ranges from 0 to 14
- acidic < 7
- basic > 7
- most biological fluids range from 6-8
Acids - ANSWER compounds that form hydrogen ions when dissolved
in water
Bases - ANSWER Compounds that reduce the concentration of
hydrogen ions in a solution.
, buffer system - ANSWER - the internal pH of most living cells must
remain close to pH 7
- minimize changes in concentration of H+ and OH- in a solution
- contain a weak acid and a corresponding base
organic molecules - ANSWER molecules that contain carbon
Hydrocarbons - ANSWER Compounds composed of only carbon and
hydrogen
carbon skeleton - ANSWER The chain of carbon atoms that forms the
structural backbone of an organic molecule.
Isomers - ANSWER Two different molecules that have the same
chemical formula
Functional group - ANSWER A specific configuration of atoms
commonly attached to the carbon skeletons of organic molecules and
involved in chemical reactions.
- Hydroxyl
- Carbonyl
- Carboxyl
- Amino
- Sulfhydryl
- Phosphate
