Bio 172 Exam II Practice Exam Questions With Correct Answers.

Bio 172 Exam II Practice Exam Questions With
Correct Answers

Which |of |the |following |does |NOT |occur |during |metabolism?

A. |Electron |carriers |are |reduced |during |fatty |acid |catabolism.

B. |Electron |carriers |are |reduced |during |amino |acid |catabolism.

C. |Electron |carriers |are |reduced |during |glucose |catabolism.

D. |Acetyl |CoA |is |generated |during |catabolism |of |fatty |acids, |amino |acids |and |glucose.

E. |None, |because |all |of |these |options |occur |during |metabolism. |- |CORRECT |ANSWER✔✔-E. |
None, |because |all |of |these |options |occur |during |metabolism.



Protein |X |is |an |integral |membrane |protein |in |the |rough |ER. |Which |of |the |following |processes |
helps |target |protein |X |to |its |final |destination?

A. |Signal |recognition |particle

B. |Hydrophobic |signal |anchor |sequence

C. |The |golgi |apparatus

D. |Exocytosis

E. |Receptor-mediated |endocytosis |- |CORRECT |ANSWER✔✔-A. |Signal |recognition |particle

B. |Hydrophobic |signal |anchor |sequence



Which |of |the |following |would |you |expect |if |a |cell |was |placed |in |an |isotonic |solution?

A. |There |would |be |a |net |movement |of |water |out |of |the |cell.

B. |There |would |be |a |net |movement |of |water |into |the |cell.

C. |There |would |be |no |net |movement |of |water |into |or |out |of |the |cell.

D. |There |would |be |a |net |movement |of |solute |into |the |cell.

,E. |There |would |be |a |net |movement |of |solute |out |of |the |cell. |- |CORRECT |ANSWER✔✔-C. |There
|would |be |no |net |movement |of |water |into |or |out |of |the |cell.




Which |of |the |following |would |never |be |a |product |of |either |glycolysis |or |fermentation?

A. |CO2

B. |ADP

C. |NAD+

D. |ATP

E. |Acetyl |CoA |- |CORRECT |ANSWER✔✔-E. |Acetyl |CoA



The |following |DNA |sequence |representing |a |codon |was |changed |from |5' |TAT |to |5' |TAG |in |the |
nontemplate |DNA |strand. |Which |of |the |following |best |describes |the |nature |of |this |change?

a. |deletion

b. |insertion

c. |missense

d. |nonsense

e. |nonsynonymous |- |CORRECT |ANSWER✔✔-d. |nonsense



Which |of |the |following |does |not |donate |an |electron |to |an |electron |transport |chain?

a. |NADH

b. |FADH2

c. |H2O

d. |NADPH

e. |All |of |these |options |donate |are |correct. |- |CORRECT |ANSWER✔✔-d. |NADPH



Which |of |the |following |does |NOT |occur |during |the |citric |acid |cycle?

a. |ATP |is |produced

, b. |NADH |is |produced

c. |FADH2 |is |produced

d. |Carbons |originating |from |glucose |are |oxidized |to |CO2.

e. |ATP |is |consumed |- |CORRECT |ANSWER✔✔-e. |ATP |is |consumed



Which |of |the |following |is |true |of |an |aquaporin?

a. |You |would |expect |the |inside |channel |of |an |aquaporin |to |contain |polar |amino |acids

b. |Aquaporins |move |water |from |a |high |to |a |low |solute |concentration

c. |Aquaporins |are |symporters

d. |Transport |through |an |aquaporin |requires |energy

e. |Aquaporins |are |not |saturable |- |CORRECT |ANSWER✔✔-a. |You |would |expect |the |inside |
channel |of |an |aquaporin |to |contain |polar |amino |acids



As |electrons |flow |down |the |electron |transport |chain |in |the |mitochondria_____

a. |NAD+ |and |FAD |become |reduced.

b. |an |electrochemical |gradient |is |established.

c. |the |pH |of |the |mitochondrial |matrix |decreases.

d. |water |is |split |to |form |oxygen.

e. |the |electrons |gain |free |energy. |- |CORRECT |ANSWER✔✔-b. |an |electrochemical |gradient |is |
established.



During |the |Calvin |cycle, |which |of |the |following |does |not |occur?

a. |NADPH |is |reduced |during |the |regeneration |phase.

b. |NADPH |is |oxidized |in |the |reduction |phase.

c. |ATP |is |consumed |just |after |carbon |fixation |and |during |regeneration.

d. |G3P |exits |the |cycle.