BIOCHEMISTRY CH.1-3 HOMEWORK 1
ANSWER KEY QUESTIONS WITH
CORRECT ANSWERS
What aaare aamolecules aaA aaand aaB aacalled, aaif aamolecule aaA aais aalarge aaand
aatransforms aainto aaa aalow-molecular-weight aamolecule aaB? aa- aaANSA aais aaa
aabiological aamacromolecule aaand aaB aais aaa aametabolite.
Which aastatement(s) aaabout aaDNA aastructure aais/are aaCORRECT? aaSelect aaall aathat
aaapply. aa- aaANSThe aaDNA aabackbone aais aabuilt aaof aarepeating aasugar-phosphate
aaunits.
Each aaDNA aastrand aahas aadirectionality aadue aato aaidentical aaorientation aaof aathe
aasugar-phosphate aaunits.
Each aasugar aais aaconnected aato aatwo aaphosphate aagroups aathrough aadifferent
aalinkages.
Its aastructure aais aaa aadouble aahelix aacomposed aaof aatwo aaintertwined aastrands.
What aamakes aawater aaa aaversatile aasolvent? aa- aaANSsimultaneous aaformation aaof aaa
aalarge aanumber aaof aahydrogen aabonds
Which aastatement aaabout aacovalent aabonds aais aaINCORRECT? aa- aaANSExistence
aaof aaseveral aaresonance aastructures aaof aanearly aaequal aaenergies aadecreases
aastability aaof aaa aacompound.
What aais aathe aareason aafor aathe aaexistence aaof aathe aahydrophobic aaeffect? aa-
aaANSthe aatendency aaof aanonpolar aamolecules aato aaself-associate aain aathe
aapresence aaof aaan aaaqueous aasolution
Which aastatement aaabout aaionic aainteractions aain aathe aaformation aaof aathe aaDNA
aadouble aahelix aais aaCORRECT? aa- aaANSSome aaunfavorable aaionic aainteractions
aatake aaplace aawhen aatwo aastrands aaof aaDNA aacome aatogether
Which aastatement aaabout aathe aarole aaof aahydrogen aabonds aain aaDNA aadouble aahelix
aaformation aais aaINCORRECT? aa- aaANSThe aahydrophobic aaeffect aacontributes aato
aathe aafavorability aaof aabase aastacking.
ANSWER KEY QUESTIONS WITH
CORRECT ANSWERS
What aaare aamolecules aaA aaand aaB aacalled, aaif aamolecule aaA aais aalarge aaand
aatransforms aainto aaa aalow-molecular-weight aamolecule aaB? aa- aaANSA aais aaa
aabiological aamacromolecule aaand aaB aais aaa aametabolite.
Which aastatement(s) aaabout aaDNA aastructure aais/are aaCORRECT? aaSelect aaall aathat
aaapply. aa- aaANSThe aaDNA aabackbone aais aabuilt aaof aarepeating aasugar-phosphate
aaunits.
Each aaDNA aastrand aahas aadirectionality aadue aato aaidentical aaorientation aaof aathe
aasugar-phosphate aaunits.
Each aasugar aais aaconnected aato aatwo aaphosphate aagroups aathrough aadifferent
aalinkages.
Its aastructure aais aaa aadouble aahelix aacomposed aaof aatwo aaintertwined aastrands.
What aamakes aawater aaa aaversatile aasolvent? aa- aaANSsimultaneous aaformation aaof aaa
aalarge aanumber aaof aahydrogen aabonds
Which aastatement aaabout aacovalent aabonds aais aaINCORRECT? aa- aaANSExistence
aaof aaseveral aaresonance aastructures aaof aanearly aaequal aaenergies aadecreases
aastability aaof aaa aacompound.
What aais aathe aareason aafor aathe aaexistence aaof aathe aahydrophobic aaeffect? aa-
aaANSthe aatendency aaof aanonpolar aamolecules aato aaself-associate aain aathe
aapresence aaof aaan aaaqueous aasolution
Which aastatement aaabout aaionic aainteractions aain aathe aaformation aaof aathe aaDNA
aadouble aahelix aais aaCORRECT? aa- aaANSSome aaunfavorable aaionic aainteractions
aatake aaplace aawhen aatwo aastrands aaof aaDNA aacome aatogether
Which aastatement aaabout aathe aarole aaof aahydrogen aabonds aain aaDNA aadouble aahelix
aaformation aais aaINCORRECT? aa- aaANSThe aahydrophobic aaeffect aacontributes aato
aathe aafavorability aaof aabase aastacking.
