Exam (elaborations)
UCI BIO 93- MIDTERM 1 QUESTIONS AND ANSWERS
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UCI BIO 93- MIDTERM 1 QUESTIONS AND ANSWERS
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UCI BIO 93- MIDTERM 1 QUESTIONSAND ANSWERS
atoms6-6ans--smallest6unit6of6chemical6elements
molecules6-6ans--two6or6more6atoms6combined
compound6-6ans--two6or6more6elements6combined6in6a6fixed6ration
C,6O,6H,6N6-6ans--...6are646elements6that6make6up696%6of6all6living6matter
covalent6bond6-6ans--what6is6the6strongest6bond?
covalent6-6ans--sharing6of6electrons6by6two6atoms
ionic6-6ans--transfer6of6electrons6between6two6atoms
hydrogen6bond6-6ans--what6is6a6weak6bond?
hydrogen6bond6-6ans--
the6H6atom6forms6one6covalent6bond6and6a6second6weaker6bond6with6an6atom6in6anothe
r6molecules
nonpolar6-6ans--equal6sharing6of6electrons
(two6of6the6same6element)
polar6-6ans--unequal6sharing6of6electrons
has6a6charge
(water)
negative6-6ans--what6is6the6charge6of6O6in6water?
positive6-6ans--what6is6the6charge6of6H6in6water?
cohesion6-6ans--interactions6between6water6molecules
(H2O6with6H2O)
, solvent6-6ans--interactions6between6water6and6other6molecules
46bonds6-6ans--what6is6the6maximum6amount6of6bonds6that6hydrogen6can6form?
15%6-6ans--
in6room6temperature6of6water6what6%6is6the6maximum6amount6of6bonds6going6to6be6mad
e?
more6acidic6-6ans--when6H+6concentration6increases...
more6basic6-6ans--what6H-6concentration6decreases...
hydrophilic6-6ans--affinity6for6water
(polar6and6ionic6bonds)
hydrophobic6-6ans--repel6water
(nonpolar6covalent6bonds)
buffers6-6ans--
chemical6processes6are6sensitive6to6pH6changes6and6resist6change6in6the6pH6solution
7.46-6ans--the6pH6of6human6blood6is...
carbonic6acid6and6bicarbonate6-6ans--what6are6the6main6buffers6in6blood?
right6-6ans--response6to6a6rise6in6pH6in6blood6(becomes6more6basic)
left6-6ans--response6to6a6drop6in6pH6in6blood6(becomes6more6acidic)
carbon6atoms6-6ans--building6blocks6for6biological6molecules
46VE6-6ans--how6many6VE6does6carbon6have?
covalent6bonds6-6ans--how6do6functional6groups6join6to6the6carbon6skeleton?
hydroxyl6-6ans---alcohols
-polar
-dissolves6organic6compounds6(like6sugars)
carbonyl6-6ans---ketones6(within6skeleton)
-aldehydes6(at6the6end6of6skeleton)
carboxyl6-6ans---is6acidic
-weak6acid
-hydroxyl+carbonyl
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