BIOL 1009 midterm exam /UMN/UMN BIOL 1009
general biology Exam With Actual Correct
Questions And Verified Detailed Answers| Currently
Testing Version | Already Graded A+|Newest |2026
2027(university of Minnesota)
Which of the following membrane activities do NOT require energy from ATP hydrolysis?
Select one:
a. all of these answers are correct
b. movement of solutes by carrier proteins
c. passive diffusion
d. movement of solutes by channel proteins
A
Which of the following statements about ATP and ADP is TRUE?
Select one:
a. ATP acts as an allosteric activator of many enzymes in catabolic pathways while ADP
acts as an allosteric inhibitor of many enzymes in catabolic pathways.
b. ATP and ADP act as allosteric inhibitors of many enzymes in anabolic pathways.
c. ATP acts as an allosteric inhibitor of many enzymes in catabolic pathways while ADP
acts as an allosteric activator of many enzymes in catabolic pathways.
d. ATP acts as an allosteric inhibitor of many enzymes in anabolic pathways while ADP
acts as an allosteric activator of many enzymes in anabolic pathways.
C
All of the following are part of a prokaryotic cell except
Select one:
a. a plasma membrane
b. an endoplasmic reticulum
c. ribosomes
d. DNA
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,B
An enzyme's specificity is dependent on the
Select one:
a. tertiary structure of the enzyme.
b. temperature of the reaction.
c. substrates of the reaction.
d. free energy of the reaction.
A
Ribosomes consist of
Select one:
a. RNA and fatty acid.
b. DNA and protein.
c. phospholipid and protein.
d. RNA and protein.
D
Which of the following statements concerning catabolic pathways is TRUE?
Select one:
a. They are usually coupled with anabolic pathways to which they supply energy in the
form of ATP.
b. They are endergonic.
c. They combine molecules into more energy-rich foods.
d. They are spontaneous and do not need enzyme catalysis.
A
The mathematical expression for the change in the free energy of a system is ∆G = ∆H -
T∆S. Which of the following is (are) TRUE?
Select one:
a. T is the temperature in degrees Celsius.
b. ∆S is the change in enthalpy.
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,c. ∆G is the change in free energy.
d. ∆H is the change in entropy.
C
Ions and large polar molecules do not readily diffuse through the phospholipid bilayer of
the cell membrane because the
Select one:
a. ions and molecules become entangled in the carbohydrate chains of the glycocalyx.
b. fatty acid tails of the bilayer form a hydrophobic barrier.
c. polar head groups of the bilayer form a hydrophilic barrier.
d. bilayer is a rigid and impenetrable barrier.
B
Of the following, the greatest electronegativity would be exhibited by an atom having
Select one:
a. four protons in its nucleus and two electrons in its second electron shell.
b. six protons in its nucleus and four electrons in its second electron shell.
c. nine protons in its nucleus and seven electrons in its second electron shell.
d. three protons in its nucleus and one electron in its second electron shell.
C
The concentration of iodine in the cells of the thyroid gland is many times greater inside
the cells than outside them. This situation could be maintained by
Select one:
a. passive diffusion of iodine across the plasma membrane.
b. exocytosis.
c. facilitated diffusion of iodine across the plasma membrane.
d. active transport of iodine across the plasma membrane.
Feedback
D
Use the diagram below to help answer this question. The diagram shows a U-tube, with
the two arms of the tube separated at the bottom by a semi-permeable barrier. This
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, semi-permeable barrier is permeable to water and glucose, but not to sucrose. If you
add 1 liter of an aqueous solution containing 2 moles of sucrose and 1 mole of glucose
to side "A" of the tube, and 1 liter of an aqueous solution containing 1 mole of sucrose
and 2 moles of glucose to side "B" of the tube, after the system reaches equilibrium,
what changes are observed?
B
When an electron moves from a lower energy level to a higher one, it
Select one:
a. forms a bond with a proton in the nucleus.
b. transforms the atom from one isotope to another.
c. absorbs energy.
d. radiates energy.
C
For the reaction described in the figure shown below, which of the following would be
the same in an enzyme-catalyzed or noncatalyzed reaction?
Select one:
a. arrow A
b. arrow D
c. arrow C
d. arrow B
B. Arrow D
Which of the following is NOT an example of discovery science?
Select one:
a. Testing the prediction that mimicking the coloring of poisonous snakes will protect
non-poisonous snakes from predation.
b. Observations that led to the conclusion that all organism are made of cells
4|Page
general biology Exam With Actual Correct
Questions And Verified Detailed Answers| Currently
Testing Version | Already Graded A+|Newest |2026
2027(university of Minnesota)
Which of the following membrane activities do NOT require energy from ATP hydrolysis?
Select one:
a. all of these answers are correct
b. movement of solutes by carrier proteins
c. passive diffusion
d. movement of solutes by channel proteins
A
Which of the following statements about ATP and ADP is TRUE?
Select one:
a. ATP acts as an allosteric activator of many enzymes in catabolic pathways while ADP
acts as an allosteric inhibitor of many enzymes in catabolic pathways.
b. ATP and ADP act as allosteric inhibitors of many enzymes in anabolic pathways.
c. ATP acts as an allosteric inhibitor of many enzymes in catabolic pathways while ADP
acts as an allosteric activator of many enzymes in catabolic pathways.
d. ATP acts as an allosteric inhibitor of many enzymes in anabolic pathways while ADP
acts as an allosteric activator of many enzymes in anabolic pathways.
C
All of the following are part of a prokaryotic cell except
Select one:
a. a plasma membrane
b. an endoplasmic reticulum
c. ribosomes
d. DNA
1|Page
,B
An enzyme's specificity is dependent on the
Select one:
a. tertiary structure of the enzyme.
b. temperature of the reaction.
c. substrates of the reaction.
d. free energy of the reaction.
A
Ribosomes consist of
Select one:
a. RNA and fatty acid.
b. DNA and protein.
c. phospholipid and protein.
d. RNA and protein.
D
Which of the following statements concerning catabolic pathways is TRUE?
Select one:
a. They are usually coupled with anabolic pathways to which they supply energy in the
form of ATP.
b. They are endergonic.
c. They combine molecules into more energy-rich foods.
d. They are spontaneous and do not need enzyme catalysis.
A
The mathematical expression for the change in the free energy of a system is ∆G = ∆H -
T∆S. Which of the following is (are) TRUE?
Select one:
a. T is the temperature in degrees Celsius.
b. ∆S is the change in enthalpy.
2|Page
,c. ∆G is the change in free energy.
d. ∆H is the change in entropy.
C
Ions and large polar molecules do not readily diffuse through the phospholipid bilayer of
the cell membrane because the
Select one:
a. ions and molecules become entangled in the carbohydrate chains of the glycocalyx.
b. fatty acid tails of the bilayer form a hydrophobic barrier.
c. polar head groups of the bilayer form a hydrophilic barrier.
d. bilayer is a rigid and impenetrable barrier.
B
Of the following, the greatest electronegativity would be exhibited by an atom having
Select one:
a. four protons in its nucleus and two electrons in its second electron shell.
b. six protons in its nucleus and four electrons in its second electron shell.
c. nine protons in its nucleus and seven electrons in its second electron shell.
d. three protons in its nucleus and one electron in its second electron shell.
C
The concentration of iodine in the cells of the thyroid gland is many times greater inside
the cells than outside them. This situation could be maintained by
Select one:
a. passive diffusion of iodine across the plasma membrane.
b. exocytosis.
c. facilitated diffusion of iodine across the plasma membrane.
d. active transport of iodine across the plasma membrane.
Feedback
D
Use the diagram below to help answer this question. The diagram shows a U-tube, with
the two arms of the tube separated at the bottom by a semi-permeable barrier. This
3|Page
, semi-permeable barrier is permeable to water and glucose, but not to sucrose. If you
add 1 liter of an aqueous solution containing 2 moles of sucrose and 1 mole of glucose
to side "A" of the tube, and 1 liter of an aqueous solution containing 1 mole of sucrose
and 2 moles of glucose to side "B" of the tube, after the system reaches equilibrium,
what changes are observed?
B
When an electron moves from a lower energy level to a higher one, it
Select one:
a. forms a bond with a proton in the nucleus.
b. transforms the atom from one isotope to another.
c. absorbs energy.
d. radiates energy.
C
For the reaction described in the figure shown below, which of the following would be
the same in an enzyme-catalyzed or noncatalyzed reaction?
Select one:
a. arrow A
b. arrow D
c. arrow C
d. arrow B
B. Arrow D
Which of the following is NOT an example of discovery science?
Select one:
a. Testing the prediction that mimicking the coloring of poisonous snakes will protect
non-poisonous snakes from predation.
b. Observations that led to the conclusion that all organism are made of cells
4|Page
