Bio 132 Exam Questions and
Answers||A+ Solution guide (Verified)
Which of the following types of macromolecules is least polar? - Answer- Any with
sterols since they are lipids iwth very few oxygens
Which of the following functional groups is highly reactive and defines the anomeric
carbon of sugars? - Answer- carbonyl
Phosphate buffer results from the partial dissociation of Phosphoric Acid (H3PO4) at
equilibrium with dihydrogen phosphate ions (H2PO3-) and protons (H+). What would
happen to the equilibrium if you added the base Sodium Hydroxide (NaOH) and how it
would ultimately affect pH. - Answer- The added OH- would react with the H+ to form
water, ultimately causing the H3PO4 to dissociate to replace the lost H+ and
maintaining the same pH
What roles does malonic acid play with respect to succinate dehydrogenaSe? - Answer-
Malonic acid is a competitive inhibitor since inhibition is based on concentration, thus
"competitive"
Isotopes have varying... - Answer- neutrons
What are built from 2 strands of subunits and are the strongest components of the
cytoskeleton? - Answer- actin microfilaments
How does sterol affect membrane fluidity? - Answer- increases fluidity at low
temperatures, but decreases fluidity at high temperatures
Pick one of the following organelles that is always considered a part of the
endomembrane system - Answer- Golgi Bodies
Which of the following are true of growing microtubules? - Answer- growing
microtubules have a large GTP-cap
If you examine side A after 3 days, you should find
A) a decrease in the concentration of NaCl and glucose and an increase in the water
level.
B) a decrease in the concentration of NaCl, an increase in water level, and no change in
the concentration of
glucose.
C) no net change in the system.
D) a decrease in the concentration of NaCl and a decrease in the water level.
, E) no change in the concentration of NaCl and glucose and an increase in the water
level. - Answer- The glucose concentration has decreased, and the volume has
increased
Which of the following represents the activation energy needed for an enzyme-
catalyzed reaction? - Answer- b
if the enzyme catalyzed reaction has a deltaG of-20kcal/mol, which is true for the deltaG
of the non-enzyme catalyzed reaction? - Answer- -20kcal/mol
Hitler killed himself using cyanide pills. Cyanide binds to and inhibits the enzyme
cytochrome C (a member of the electron transport chain in the cellular respiration).
What happened to cellular respiration in the evil dictator? - Answer- a loss of membrane
potential stopped in the production of ATP
Dandelion flower petal cells, which are bright yellow, require a lot of ATP for growth and
development. Based on your knowledge of cellular respiration and photosynthesis,
which of the following must be TRUE about these cells? - Answer- sugars are produced
in the plastids of the leaves, sent to the mitochondria within petal cells to produce ATP
Pick the true statement regarding RUBISCO. - Answer- RUBISCO is able to bind to
CO2 during the Calvin Cycle
Which of the following is only found in eukaryotic cells? - Answer- smooth ER
Which of these adds energy in the electrons before they pass through the electron
transport chain in photosynthesis? - Answer- Photosystem II
Which of these is a good example of facilitated diffusion? - Answer- To signal stress,
"Calcium Channels" open up since ions will not diffuse through a membrane
B-oxidation produces acetyl coA from - Answer- hydrocarbon chains of fatty acids
True or False: celliobose, to the right, displays a (1-5) a glysodic linkage - Answer-
False (it's a 1-4)
True or False: Plant fats, like canola oil, tend to have more saturated fatty acids than
animal fats, like bacon grease - Answer- False
CAM photosynthesis allows plants to "fix" carbon at night to avoid photorespiration -
Answer- True
Roses are red and violets are blue primarily because the flower pigments absorb these
wavelengths of light - Answer- False (the pigments "reflect" these colors)
Answers||A+ Solution guide (Verified)
Which of the following types of macromolecules is least polar? - Answer- Any with
sterols since they are lipids iwth very few oxygens
Which of the following functional groups is highly reactive and defines the anomeric
carbon of sugars? - Answer- carbonyl
Phosphate buffer results from the partial dissociation of Phosphoric Acid (H3PO4) at
equilibrium with dihydrogen phosphate ions (H2PO3-) and protons (H+). What would
happen to the equilibrium if you added the base Sodium Hydroxide (NaOH) and how it
would ultimately affect pH. - Answer- The added OH- would react with the H+ to form
water, ultimately causing the H3PO4 to dissociate to replace the lost H+ and
maintaining the same pH
What roles does malonic acid play with respect to succinate dehydrogenaSe? - Answer-
Malonic acid is a competitive inhibitor since inhibition is based on concentration, thus
"competitive"
Isotopes have varying... - Answer- neutrons
What are built from 2 strands of subunits and are the strongest components of the
cytoskeleton? - Answer- actin microfilaments
How does sterol affect membrane fluidity? - Answer- increases fluidity at low
temperatures, but decreases fluidity at high temperatures
Pick one of the following organelles that is always considered a part of the
endomembrane system - Answer- Golgi Bodies
Which of the following are true of growing microtubules? - Answer- growing
microtubules have a large GTP-cap
If you examine side A after 3 days, you should find
A) a decrease in the concentration of NaCl and glucose and an increase in the water
level.
B) a decrease in the concentration of NaCl, an increase in water level, and no change in
the concentration of
glucose.
C) no net change in the system.
D) a decrease in the concentration of NaCl and a decrease in the water level.
, E) no change in the concentration of NaCl and glucose and an increase in the water
level. - Answer- The glucose concentration has decreased, and the volume has
increased
Which of the following represents the activation energy needed for an enzyme-
catalyzed reaction? - Answer- b
if the enzyme catalyzed reaction has a deltaG of-20kcal/mol, which is true for the deltaG
of the non-enzyme catalyzed reaction? - Answer- -20kcal/mol
Hitler killed himself using cyanide pills. Cyanide binds to and inhibits the enzyme
cytochrome C (a member of the electron transport chain in the cellular respiration).
What happened to cellular respiration in the evil dictator? - Answer- a loss of membrane
potential stopped in the production of ATP
Dandelion flower petal cells, which are bright yellow, require a lot of ATP for growth and
development. Based on your knowledge of cellular respiration and photosynthesis,
which of the following must be TRUE about these cells? - Answer- sugars are produced
in the plastids of the leaves, sent to the mitochondria within petal cells to produce ATP
Pick the true statement regarding RUBISCO. - Answer- RUBISCO is able to bind to
CO2 during the Calvin Cycle
Which of the following is only found in eukaryotic cells? - Answer- smooth ER
Which of these adds energy in the electrons before they pass through the electron
transport chain in photosynthesis? - Answer- Photosystem II
Which of these is a good example of facilitated diffusion? - Answer- To signal stress,
"Calcium Channels" open up since ions will not diffuse through a membrane
B-oxidation produces acetyl coA from - Answer- hydrocarbon chains of fatty acids
True or False: celliobose, to the right, displays a (1-5) a glysodic linkage - Answer-
False (it's a 1-4)
True or False: Plant fats, like canola oil, tend to have more saturated fatty acids than
animal fats, like bacon grease - Answer- False
CAM photosynthesis allows plants to "fix" carbon at night to avoid photorespiration -
Answer- True
Roses are red and violets are blue primarily because the flower pigments absorb these
wavelengths of light - Answer- False (the pigments "reflect" these colors)
