BCH 4053 Exam 1 Questions With Correct
Answers
Biochemistry ||- ||CORRECT ||ANSWER✔✔-Using ||chemistry ||to ||understand ||living ||things ||
(biology)
cells ||--> ||organelles ||--> ||macromolecules
What ||are ||the ||macromolecules? ||- ||CORRECT ||ANSWER✔✔-Nucleic ||acids, ||carbohydrates, ||
proteins, ||lipids
What ||makes ||C, ||H, ||O, ||and ||N ||so ||suitable ||for ||the ||chemistry ||of ||life? ||- ||CORRECT ||
ANSWER✔✔-Ability ||to ||form ||covalent ||bonds ||(by ||sharing ||electron ||pairs)
Lightest ||elements ||capable ||of ||forming ||covalent ||bonds
Form ||the ||strongest ||covalent ||bonds ||because ||the ||strength ||of ||covalent ||bonds ||are ||inversely
||proportional ||to ||the ||atomic ||weight
How ||many ||covalent ||bonds ||can ||C ||form? ||- ||CORRECT ||ANSWER✔✔-4 ||single ||covalent ||bonds
All ||biomolecules ||are ||compounds ||of ||C. ||Why ||C? ||- ||CORRECT ||ANSWER✔✔-Versatility
Can ||form ||4 ||single ||covalent ||bonds
Tetrahedral ||structure
Can ||attach ||to ||itself
Can ||form ||double ||and ||triple ||covalent ||bonds
Can ||form ||complex ||structures ||in ||3D
What ||are ||the ||4 ||non-covalent/ ||weak ||interactions ||(in ||order ||from ||strongest ||to ||weakest)? ||-
||CORRECT ||ANSWER✔✔-Charge-charge/ionic/salt-bridge
, Hydrogen ||bonding
Hydrophobic ||interactions
Van ||der ||Waals ||forces
Charge-charge ||interactions ||- ||CORRECT ||ANSWER✔✔-An ||interaction ||that ||exists ||between ||2 ||
groups ||of ||opposite ||charges
Distance ||limited
Strongest ||of ||non-covalent ||interactions
H-Bonding ||- ||CORRECT ||ANSWER✔✔-Not ||actually ||a ||bond
Must ||be ||attached ||to ||an ||electronegative ||atom
Interaction ||between ||an ||H ||connected ||to ||an ||electronegative ||atom ||with ||another ||
electronegative ||atom ||(bearing ||an ||electron ||pair)
Electronegativity ||- ||CORRECT ||ANSWER✔✔-Ability ||of ||an ||atom ||to ||attract ||electrons ||to ||itself
What ||are ||the ||2 ||factors ||for ||H ||bonding? ||- ||CORRECT ||ANSWER✔✔-Proximity
Alignment ||(Strongest ||H ||bond ||exists ||when ||the ||3 ||atoms ||are ||aligned ||in ||a ||straight ||line)
Hydrophobic ||Interactions ||- ||CORRECT ||ANSWER✔✔-Water ||hate
An ||interaction ||that ||exists ||between ||non-polar ||molecules ||that ||are ||excluded ||by ||H2O
*Non-polar ||molecules ||do ||not ||like ||to ||interact ||with ||water, ||so ||they ||interact ||with ||each ||
other ||instead.
Van ||der ||Waals ||Forces ||- ||CORRECT ||ANSWER✔✔-Interaction ||between ||closely-packed ||atoms ||
when ||the ||nucleus ||of ||one ||atom ||senses ||the ||electron ||cloud ||of ||another ||atom
d=r1+r2
Answers
Biochemistry ||- ||CORRECT ||ANSWER✔✔-Using ||chemistry ||to ||understand ||living ||things ||
(biology)
cells ||--> ||organelles ||--> ||macromolecules
What ||are ||the ||macromolecules? ||- ||CORRECT ||ANSWER✔✔-Nucleic ||acids, ||carbohydrates, ||
proteins, ||lipids
What ||makes ||C, ||H, ||O, ||and ||N ||so ||suitable ||for ||the ||chemistry ||of ||life? ||- ||CORRECT ||
ANSWER✔✔-Ability ||to ||form ||covalent ||bonds ||(by ||sharing ||electron ||pairs)
Lightest ||elements ||capable ||of ||forming ||covalent ||bonds
Form ||the ||strongest ||covalent ||bonds ||because ||the ||strength ||of ||covalent ||bonds ||are ||inversely
||proportional ||to ||the ||atomic ||weight
How ||many ||covalent ||bonds ||can ||C ||form? ||- ||CORRECT ||ANSWER✔✔-4 ||single ||covalent ||bonds
All ||biomolecules ||are ||compounds ||of ||C. ||Why ||C? ||- ||CORRECT ||ANSWER✔✔-Versatility
Can ||form ||4 ||single ||covalent ||bonds
Tetrahedral ||structure
Can ||attach ||to ||itself
Can ||form ||double ||and ||triple ||covalent ||bonds
Can ||form ||complex ||structures ||in ||3D
What ||are ||the ||4 ||non-covalent/ ||weak ||interactions ||(in ||order ||from ||strongest ||to ||weakest)? ||-
||CORRECT ||ANSWER✔✔-Charge-charge/ionic/salt-bridge
, Hydrogen ||bonding
Hydrophobic ||interactions
Van ||der ||Waals ||forces
Charge-charge ||interactions ||- ||CORRECT ||ANSWER✔✔-An ||interaction ||that ||exists ||between ||2 ||
groups ||of ||opposite ||charges
Distance ||limited
Strongest ||of ||non-covalent ||interactions
H-Bonding ||- ||CORRECT ||ANSWER✔✔-Not ||actually ||a ||bond
Must ||be ||attached ||to ||an ||electronegative ||atom
Interaction ||between ||an ||H ||connected ||to ||an ||electronegative ||atom ||with ||another ||
electronegative ||atom ||(bearing ||an ||electron ||pair)
Electronegativity ||- ||CORRECT ||ANSWER✔✔-Ability ||of ||an ||atom ||to ||attract ||electrons ||to ||itself
What ||are ||the ||2 ||factors ||for ||H ||bonding? ||- ||CORRECT ||ANSWER✔✔-Proximity
Alignment ||(Strongest ||H ||bond ||exists ||when ||the ||3 ||atoms ||are ||aligned ||in ||a ||straight ||line)
Hydrophobic ||Interactions ||- ||CORRECT ||ANSWER✔✔-Water ||hate
An ||interaction ||that ||exists ||between ||non-polar ||molecules ||that ||are ||excluded ||by ||H2O
*Non-polar ||molecules ||do ||not ||like ||to ||interact ||with ||water, ||so ||they ||interact ||with ||each ||
other ||instead.
Van ||der ||Waals ||Forces ||- ||CORRECT ||ANSWER✔✔-Interaction ||between ||closely-packed ||atoms ||
when ||the ||nucleus ||of ||one ||atom ||senses ||the ||electron ||cloud ||of ||another ||atom
d=r1+r2
