BIO 201 EXAM 2 |COMPLETE QUESTIONS WITH 100% RATED
EXPERT SOLUTIONS |2026 LATEST UPDATED
What is likely to elicit a rapid, reverse response? - (answer)An odorant that binds to a G protein-
coupled receptor.
What is a mechanism by which cells ensure a strong response to a small amount of ligand? -
(answer)Enzyme Cascades.
How does a mutation in G-alpha that decreases its GTPase activity affect liver cell responses to
epinephrine? - (answer)It would increase glycogen phosphorylase activity.
What happens to GTP in response to epinephrine binding to its receptor on liver cells? -
(answer)It binds to G-alpha.
The H+ ATPase (Proton pump) creates electrochemical gradients across the membranes of many
protists. This is an example of: - (answer)Direct active transport
Maintenance of the Cl- concentration gradient using this mechanism is therefore dependent on: -
(answer)The Na+/K+ ATPase
,Inhibition of which of the following would prevent indirect active transport of glucose into the
cells? - (answer)Na+/K+ ATPase
T/F: The concentration of Ca++ inside the cell is higher than it is outside the cell. - (answer)False
Which of the following is a disadvantage of being a multicellular organism specifically as
opposed to being unicellular. - (answer)More difficult to absorb nutrients.
Which of the following is an advantage of multicellularity? - (answer)Larger Size
Greater mobility
Functional specialization of cells/tissues.
Differential centrifugation separates particles based on ______ using differences in _______ -
(answer)Mass, Spin speed
Protein makes up what percentage of the mass of the plasma membrane in a typical cell
(example: red blood cells) - (answer)50%
, For solutes that cannot diffuse through the membrane, water moves across the membrane from a
region of _____ to a region of _____ solute concentration. - (answer)Low, High
Pancreatic acinar cells produce and secrete digestive enzymes into the duodenum. What would
happen if pancreatic acinar cells were treated with a toxin that causes lysis (breakage) of smooth
ER membranes? - (answer)Digestive enzymes would be immediately secreted into the
duodenum.
Based on our model of evolution of the nucleus, which of the following organelles is likely
evolved from plasma membrane infoldings? - (answer)Rough ER
Smooth ER
Golgi Complex
Which of the following would likely result from infection with a virus that causes lysis
(breakage) of lysosome membranes? Consider that the total volume of the lysosomes is
approximately 50 cubic microns and the total volume of the cell is approximately 500 cubic
microns. - (answer)The lysosomal enzymes would be inactivated due to an increase in pH.
EXPERT SOLUTIONS |2026 LATEST UPDATED
What is likely to elicit a rapid, reverse response? - (answer)An odorant that binds to a G protein-
coupled receptor.
What is a mechanism by which cells ensure a strong response to a small amount of ligand? -
(answer)Enzyme Cascades.
How does a mutation in G-alpha that decreases its GTPase activity affect liver cell responses to
epinephrine? - (answer)It would increase glycogen phosphorylase activity.
What happens to GTP in response to epinephrine binding to its receptor on liver cells? -
(answer)It binds to G-alpha.
The H+ ATPase (Proton pump) creates electrochemical gradients across the membranes of many
protists. This is an example of: - (answer)Direct active transport
Maintenance of the Cl- concentration gradient using this mechanism is therefore dependent on: -
(answer)The Na+/K+ ATPase
,Inhibition of which of the following would prevent indirect active transport of glucose into the
cells? - (answer)Na+/K+ ATPase
T/F: The concentration of Ca++ inside the cell is higher than it is outside the cell. - (answer)False
Which of the following is a disadvantage of being a multicellular organism specifically as
opposed to being unicellular. - (answer)More difficult to absorb nutrients.
Which of the following is an advantage of multicellularity? - (answer)Larger Size
Greater mobility
Functional specialization of cells/tissues.
Differential centrifugation separates particles based on ______ using differences in _______ -
(answer)Mass, Spin speed
Protein makes up what percentage of the mass of the plasma membrane in a typical cell
(example: red blood cells) - (answer)50%
, For solutes that cannot diffuse through the membrane, water moves across the membrane from a
region of _____ to a region of _____ solute concentration. - (answer)Low, High
Pancreatic acinar cells produce and secrete digestive enzymes into the duodenum. What would
happen if pancreatic acinar cells were treated with a toxin that causes lysis (breakage) of smooth
ER membranes? - (answer)Digestive enzymes would be immediately secreted into the
duodenum.
Based on our model of evolution of the nucleus, which of the following organelles is likely
evolved from plasma membrane infoldings? - (answer)Rough ER
Smooth ER
Golgi Complex
Which of the following would likely result from infection with a virus that causes lysis
(breakage) of lysosome membranes? Consider that the total volume of the lysosomes is
approximately 50 cubic microns and the total volume of the cell is approximately 500 cubic
microns. - (answer)The lysosomal enzymes would be inactivated due to an increase in pH.
