IB 150- Practice Exam 1 Questions With
Correct Answers
What |is |the |relationship |between |maintaining |homeostasis |and |reaching |chemical |equilibrium |
with |the |environment |for |a |living |cell? |- |CORRECT |ANSWER✔✔-a |cell |needs |to |maintain |
homeostasis |in |order |to |perpetually |keep |itself |out |of |chemical |equilibrium
How |can |ATP |provide |the |energy |for |endergonic |reactions? |- |CORRECT |ANSWER✔✔-
Phosphorylation |of |substrates |involves |a |new |reaction |pathway, |with |all |exergonic |steps.
Which |part |of |Gibbs |Free |Energy |requires |that |the |ability |of |an |organism |to |maintain |a |highly |
ordered |internal |state |via |homeostasis |is |an |endergonic |process? |- |CORRECT |ANSWER✔✔-
Entropy
All |else |being |equal, |populations |of |aerobic |bacteria |grow |at |a |faster |rate |and |outcompete |
anaerobic |bacteria |in |uniformly |oxygen-rich |environments. |This |is |because: |- |CORRECT |
ANSWER✔✔-Anaerobic |cellular |respiration |produces |less |ATP |per |molecule |of |glucose.
Which |of |the |following |is |NOT |true |regarding |bulk |flow? |- |CORRECT |ANSWER✔✔-a. |It |provides
|for |a |much |more |efficient |movement |of |oxygen |from |the |atmosphere |to |cells
b. |It |requires |ATP
*c. |Its |associated |∆G |is |negative |Correct*
d. |It |requires |active |muscle |movements
Why |do |all |organisms |produce |at |least |some |heat? |- |CORRECT |ANSWER✔✔-negative |∆G |of |
energetically |coupled |metabolic |reactions
Correct Answers
What |is |the |relationship |between |maintaining |homeostasis |and |reaching |chemical |equilibrium |
with |the |environment |for |a |living |cell? |- |CORRECT |ANSWER✔✔-a |cell |needs |to |maintain |
homeostasis |in |order |to |perpetually |keep |itself |out |of |chemical |equilibrium
How |can |ATP |provide |the |energy |for |endergonic |reactions? |- |CORRECT |ANSWER✔✔-
Phosphorylation |of |substrates |involves |a |new |reaction |pathway, |with |all |exergonic |steps.
Which |part |of |Gibbs |Free |Energy |requires |that |the |ability |of |an |organism |to |maintain |a |highly |
ordered |internal |state |via |homeostasis |is |an |endergonic |process? |- |CORRECT |ANSWER✔✔-
Entropy
All |else |being |equal, |populations |of |aerobic |bacteria |grow |at |a |faster |rate |and |outcompete |
anaerobic |bacteria |in |uniformly |oxygen-rich |environments. |This |is |because: |- |CORRECT |
ANSWER✔✔-Anaerobic |cellular |respiration |produces |less |ATP |per |molecule |of |glucose.
Which |of |the |following |is |NOT |true |regarding |bulk |flow? |- |CORRECT |ANSWER✔✔-a. |It |provides
|for |a |much |more |efficient |movement |of |oxygen |from |the |atmosphere |to |cells
b. |It |requires |ATP
*c. |Its |associated |∆G |is |negative |Correct*
d. |It |requires |active |muscle |movements
Why |do |all |organisms |produce |at |least |some |heat? |- |CORRECT |ANSWER✔✔-negative |∆G |of |
energetically |coupled |metabolic |reactions
