BIO 150 Final Exam Questions and
answers 100% correct (31 pgs)
Which of the following is NOT a component of the plasma membrane?
a. Phospholipids
b. Cholesterol
c. Integral proteins
d. Peripheral proteins
e. Ribonucleic acids - correct answer ✔E
_______________ is a term that describes both the polar and nonpolar nature
of phospholipids.
a. amphitheaters
b. ambidextrous
c. amphibolic
d. amphipathic
e. amphibious - correct answer ✔D
Which of the following would cause an increase in van der Wal interactions
within a membrane bilayer?
a. Long unsaturated fatty acid tails
b. Long saturated fatty acid tails
c. Short unsaturated fatty acid tails
d. Short saturated fatty acid tails
e. A combination of short and long fatty acid tails - correct answer ✔B
,What would be the result of a cell placed in a hypertonic environment?
a. The solution would have a higher salt concentration than the cell so water
would flow out of the cell and it would shrivel.
b. The solution would have a lower salt concentration than the cell so water
would flow out of the cell and it would shrivel.
c. The solution would have a lower salt concentration than the cell so water
would flow out of the cell and it would burst.
d. The water would flow into and out of the cell at equal rates. - correct
answer ✔A
In the flower petunia, PhABCG1 is a membrane embedded protein that
transports volatile organic compounds across the membrane. This protein
uses ATP hydrolysis to supply the energy needed to transport these
molecules. This is an example of ____________.
a. Simple diffusion
b. Facilitated diffusion
c. Primary active transport
d. Secondary active transport
e. Osmosis - correct answer ✔C
Which of the following is a similarity shared between bacteria and mammalian
cells?
a. Both mammalian and bacterial cells are similar sized
b. Both mammalian and bacterial cells store genetic material in a nucleus
c. Both mammalian and bacterial cells make ATP in the mitochondria
d. Both mammalian and bacterial cells have a cell wall
e. Both mammalian and bacterial cells have a genome composed of nucleic
acids - correct answer ✔E
,Plants are considered ____________, while humans are ___________.
a. Photoautotrophs; chemoautotrophs
b. Chemoheterotrophs; photoautotrophs
c. Photoautotrophs; chemoheterotrophs
d. Chemoautotrophs; chemoheterotrophs
e. Chemoheterotrophs; photoheterotrophs - correct answer ✔C
Which of the following statements is correct about energy requiring chemical
reactions within a cell?
a. They are spontaneous and have a +ΔG
b. They are nonspontaneous and are considered exothermic
c. They are endothermic, have a +ΔG, and are considered nonspontaneous
d. They have a -ΔG, are nonspontaneous, and are considered exothermic
e. They are spontaneous, have a ΔG of zero, and are considered endothermic
- correct answer ✔C
The __________ is the location on the enzyme where the substrate binds.
a. Transition site
b. Substrate site
c. Active site
d. Allosteric site
e. Reduction site - correct answer ✔C
Which of the following molecules is the most reduced and would contain the
highest amount of potential energy?
a. CO2
b. C6H12O6
, c. C3H4O3
d. CH3OH
e. O2 - correct answer ✔B
Inhibitors that bind to the active site and decrease enzymatic activity are
called ____________.
a. Competitive inhibitors
b. Allosteric inhibitors
c. Reduction inhibitors
d. Suppressor inhibitors
e. Feedback inhibitors - correct answer ✔A
Which statement about energy is true?
a. Potential energy cannot be transformed into kinetic energy
b. Potential energy of the products of a reaction must be the same as the
potential energy in the products of a reaction
c. All of the potential energy in one molecule of glucose can be found in the 36
molecules of ATP
d. Entropy of a system decreases when energy is transformed
e. None of the above statements are true - correct answer ✔E
During glycolysis, glucose is partially __________ to pyruvate and NAD^+ is
___________ to NADH.
a. Reduced; reduced
b. Oxidized; oxidized
c. Reduced; oxidized
d. Oxidized; reduced
answers 100% correct (31 pgs)
Which of the following is NOT a component of the plasma membrane?
a. Phospholipids
b. Cholesterol
c. Integral proteins
d. Peripheral proteins
e. Ribonucleic acids - correct answer ✔E
_______________ is a term that describes both the polar and nonpolar nature
of phospholipids.
a. amphitheaters
b. ambidextrous
c. amphibolic
d. amphipathic
e. amphibious - correct answer ✔D
Which of the following would cause an increase in van der Wal interactions
within a membrane bilayer?
a. Long unsaturated fatty acid tails
b. Long saturated fatty acid tails
c. Short unsaturated fatty acid tails
d. Short saturated fatty acid tails
e. A combination of short and long fatty acid tails - correct answer ✔B
,What would be the result of a cell placed in a hypertonic environment?
a. The solution would have a higher salt concentration than the cell so water
would flow out of the cell and it would shrivel.
b. The solution would have a lower salt concentration than the cell so water
would flow out of the cell and it would shrivel.
c. The solution would have a lower salt concentration than the cell so water
would flow out of the cell and it would burst.
d. The water would flow into and out of the cell at equal rates. - correct
answer ✔A
In the flower petunia, PhABCG1 is a membrane embedded protein that
transports volatile organic compounds across the membrane. This protein
uses ATP hydrolysis to supply the energy needed to transport these
molecules. This is an example of ____________.
a. Simple diffusion
b. Facilitated diffusion
c. Primary active transport
d. Secondary active transport
e. Osmosis - correct answer ✔C
Which of the following is a similarity shared between bacteria and mammalian
cells?
a. Both mammalian and bacterial cells are similar sized
b. Both mammalian and bacterial cells store genetic material in a nucleus
c. Both mammalian and bacterial cells make ATP in the mitochondria
d. Both mammalian and bacterial cells have a cell wall
e. Both mammalian and bacterial cells have a genome composed of nucleic
acids - correct answer ✔E
,Plants are considered ____________, while humans are ___________.
a. Photoautotrophs; chemoautotrophs
b. Chemoheterotrophs; photoautotrophs
c. Photoautotrophs; chemoheterotrophs
d. Chemoautotrophs; chemoheterotrophs
e. Chemoheterotrophs; photoheterotrophs - correct answer ✔C
Which of the following statements is correct about energy requiring chemical
reactions within a cell?
a. They are spontaneous and have a +ΔG
b. They are nonspontaneous and are considered exothermic
c. They are endothermic, have a +ΔG, and are considered nonspontaneous
d. They have a -ΔG, are nonspontaneous, and are considered exothermic
e. They are spontaneous, have a ΔG of zero, and are considered endothermic
- correct answer ✔C
The __________ is the location on the enzyme where the substrate binds.
a. Transition site
b. Substrate site
c. Active site
d. Allosteric site
e. Reduction site - correct answer ✔C
Which of the following molecules is the most reduced and would contain the
highest amount of potential energy?
a. CO2
b. C6H12O6
, c. C3H4O3
d. CH3OH
e. O2 - correct answer ✔B
Inhibitors that bind to the active site and decrease enzymatic activity are
called ____________.
a. Competitive inhibitors
b. Allosteric inhibitors
c. Reduction inhibitors
d. Suppressor inhibitors
e. Feedback inhibitors - correct answer ✔A
Which statement about energy is true?
a. Potential energy cannot be transformed into kinetic energy
b. Potential energy of the products of a reaction must be the same as the
potential energy in the products of a reaction
c. All of the potential energy in one molecule of glucose can be found in the 36
molecules of ATP
d. Entropy of a system decreases when energy is transformed
e. None of the above statements are true - correct answer ✔E
During glycolysis, glucose is partially __________ to pyruvate and NAD^+ is
___________ to NADH.
a. Reduced; reduced
b. Oxidized; oxidized
c. Reduced; oxidized
d. Oxidized; reduced
