BS 161 exam 1 practice questions with
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correct detailed answers
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Which |of |the |following |are |common |features |of |ALL |living |organisms? |- |correct |answers |-
ability |to |store |information |in |DNA |
-presence |of |a |plasma |membrane |
-ability |to |capture |energy |from |the |environment
The |feature |of |an |experiment |that |is |changed |from |one |treatment |to |the |next |is |referred |to |as
|a(n) |- |correct |answers |a |variable
In |some |experiments, |several |identical |groups |are |set |up, |keeping |conditions |similar |among |
them. |In |the |_____ |group, |a |change |is |deliberately |introduced. |In |the |_____ |group, |this |
change |is |not |introduced. |In |this |way, |the |researcher |can |determine |if |the |change |has |an |
effect. |- |correct |answers |test; |control
What |is |immediately |produced |when |a |cell |performs |translation? |- |correct |answers |proteins
Which |one |of |the |statements |represents |the |flow |of |information |as |described |by |the |central |
dogma |of |molecular |biology? |- |correct |answers |Information |in |DNA |is |transcribed |into |RNA, |
which |carries |the |information |to |make |protein.
Which |of |these |processes |will |most |likely |decrease |the |entropy |inside |a |cell |(and |thus, |
increase |the |entropy |of |the |environment |outside |a |cell)? |- |correct |answers |linking |together |
amino |acids |to |build |a |large |protein
When |you |eat |a |hamburger, |some |of |the |energy |in |the |food |is |converted |to |ATP |that |your |
cells |can |use |to |do |all |kinds |of |work, |some |of |the |energy |is |stored |for |later |use, |and |some |of |
the |energy |is |dissipated |as |heat. |The |amount |of |energy |before |and |after |eating |the |hamburger
|is |the |same. |This |illustrates |the: |- |correct |answers |first |law |of |thermodynamics.
, All |of |the |chemical |reactions |in |a |cell |that |are |required |to |sustain |life |are |referred |to |as |- |
correct |answers |metabolism.
At |some |point |in |their |life |cycle, |all |cells |have |a |_____, |whereas |not |all |cells |have |a(n) |_____. |-
|correct |answers |plasma |membrane; |nuclear |membrane
Which |one |of |the |statements |explains |a |characteristic |of |both |all |living |organisms |and |all |
nonliving |material? |- |correct |answers |They |both |conform |to |the |basic |laws |of |chemistry |and |
physics.
By |definition, |an |ionic |interaction |occurs |between: |- |correct |answers |a |positively |charged |
molecule |and |a |negatively |charged |molecule
Imagine |you |are |looking |at |a |bottle |of |salad |dressing |containing |oil, |vinegar, |and |water. |You |
notice |that |the |oil |sits |on |"top" |of |the |other |liquids. |This |is |due, |in |part, |to |the |fact |that: |- |
correct |answers |oil |is |hydrophobic
A |fatty |acid |contains |primarily |carbon |and |hydrogen |atoms, |and |its |hydrocarbon |tail |is |very |
hydrophobic. |What |kind |of |interaction |can |occur |between |hydrocarbon |tails |of |fatty |acids? |- |
correct |answers |van |der |waals
Which |number |represents |the |pH |of |a |solution |with |the |highest |concentration |of |hydrogen |
ions |(H+)? |- |correct |answers |1.0
What |differentiates |isotopes |of |the |same |element? |- |correct |answers |neutrons
Imagine |that |you |have |a |simplified |structural |diagram |of |an |organic |molecule, |as |shown, |with |
no |letters |included. |What |can |you |deduce? |simplified |structure: |\/\/ |- |correct |answers |The |
molecule |contains |only |carbon |and |hydrogen.
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correct detailed answers
| |
Which |of |the |following |are |common |features |of |ALL |living |organisms? |- |correct |answers |-
ability |to |store |information |in |DNA |
-presence |of |a |plasma |membrane |
-ability |to |capture |energy |from |the |environment
The |feature |of |an |experiment |that |is |changed |from |one |treatment |to |the |next |is |referred |to |as
|a(n) |- |correct |answers |a |variable
In |some |experiments, |several |identical |groups |are |set |up, |keeping |conditions |similar |among |
them. |In |the |_____ |group, |a |change |is |deliberately |introduced. |In |the |_____ |group, |this |
change |is |not |introduced. |In |this |way, |the |researcher |can |determine |if |the |change |has |an |
effect. |- |correct |answers |test; |control
What |is |immediately |produced |when |a |cell |performs |translation? |- |correct |answers |proteins
Which |one |of |the |statements |represents |the |flow |of |information |as |described |by |the |central |
dogma |of |molecular |biology? |- |correct |answers |Information |in |DNA |is |transcribed |into |RNA, |
which |carries |the |information |to |make |protein.
Which |of |these |processes |will |most |likely |decrease |the |entropy |inside |a |cell |(and |thus, |
increase |the |entropy |of |the |environment |outside |a |cell)? |- |correct |answers |linking |together |
amino |acids |to |build |a |large |protein
When |you |eat |a |hamburger, |some |of |the |energy |in |the |food |is |converted |to |ATP |that |your |
cells |can |use |to |do |all |kinds |of |work, |some |of |the |energy |is |stored |for |later |use, |and |some |of |
the |energy |is |dissipated |as |heat. |The |amount |of |energy |before |and |after |eating |the |hamburger
|is |the |same. |This |illustrates |the: |- |correct |answers |first |law |of |thermodynamics.
, All |of |the |chemical |reactions |in |a |cell |that |are |required |to |sustain |life |are |referred |to |as |- |
correct |answers |metabolism.
At |some |point |in |their |life |cycle, |all |cells |have |a |_____, |whereas |not |all |cells |have |a(n) |_____. |-
|correct |answers |plasma |membrane; |nuclear |membrane
Which |one |of |the |statements |explains |a |characteristic |of |both |all |living |organisms |and |all |
nonliving |material? |- |correct |answers |They |both |conform |to |the |basic |laws |of |chemistry |and |
physics.
By |definition, |an |ionic |interaction |occurs |between: |- |correct |answers |a |positively |charged |
molecule |and |a |negatively |charged |molecule
Imagine |you |are |looking |at |a |bottle |of |salad |dressing |containing |oil, |vinegar, |and |water. |You |
notice |that |the |oil |sits |on |"top" |of |the |other |liquids. |This |is |due, |in |part, |to |the |fact |that: |- |
correct |answers |oil |is |hydrophobic
A |fatty |acid |contains |primarily |carbon |and |hydrogen |atoms, |and |its |hydrocarbon |tail |is |very |
hydrophobic. |What |kind |of |interaction |can |occur |between |hydrocarbon |tails |of |fatty |acids? |- |
correct |answers |van |der |waals
Which |number |represents |the |pH |of |a |solution |with |the |highest |concentration |of |hydrogen |
ions |(H+)? |- |correct |answers |1.0
What |differentiates |isotopes |of |the |same |element? |- |correct |answers |neutrons
Imagine |that |you |have |a |simplified |structural |diagram |of |an |organic |molecule, |as |shown, |with |
no |letters |included. |What |can |you |deduce? |simplified |structure: |\/\/ |- |correct |answers |The |
molecule |contains |only |carbon |and |hydrogen.
