UNE BIOCHEMISTRY TESTS COMPILATION
BUNDLE 2026 ACCURATE QUESTIONS AND
ANSWERS COMPREHENSIVE STUDY PACK
GRADED A+
⩥Which of the following would be consistent with an exergonic
reaction?
a.) ∆S would be negative
b.) ∆G would be negative
c.) ∆S would be positive
d.)∆G would be positive.
Answer: ∆G would be negative (B)
⩥Which of the following describes the malate-aspartate shuttle system?
a.) Carries NADH from the cytoplasm directly into the mitochondria
,b.) Generates 2.5 molecules of ATP in mitochondria per each NADH
from glycolysis
c.) Moves NADH from the mitochondria to the cytoplasm
d.) Relies on malate dehydrogenase in the inner mitochondrial
membrane
e.) Requires reduction of pyruvate to lactate for oxidizing NADH.
Answer: Generates 2.5 molecules of ATP in mitochondria per each
NADH from glycolysis (B)
⩥ATP is a high energy molecule that is often hydrolyzed during
reactions. The energy within ATP is stored primarily in which of the
following components of the molecule?
a.) In the high energy phosphate bonds
b.) In the adenine base
c.) In the D-ribose group.
Answer: In the high energy phosphate bonds (A)
,⩥Dinitrophenol is an uncoupler of the electron transport chain. The
addition of dinitrophenol will have which of the following impacts?
a.) Decrease the pH of the intermembrane space
b.) Increase oxygen consumption
c.) Decrease oxidation of NADH
d.) Increase ATP production.
Answer: Increase oxygen consumption (B)
⩥In the malate aspartate shuttle, glutamate is converted to _______ in
the mitochondria while aspartate is converted to _______ in the cytosol.
a.) Oxaloacetate; malate
b.) alpha-ketoglutarate; oxaloacetate
c.) Oxaloacetate; glutamate
d.) Aspartate; alpha-ketoglutarate
, e.) Malate; oxaloacetate.
Answer: alpha-ketoglutarate; oxaloacetate (B)
⩥The glycerophosphate shuttle is a major shuttle of most tissues. Which
of the following best describes the transfer of electrons by this shuttle?
a.) Electrons are directly transferred from glycerol-3-phosphate to NAD
containing glycerol phosphate dehydrogenase
b.) Electrons are directly transferred from glycerol-3-phosphate to an
FAD containing glycerol phosphate dehydrogenase
c.) Electrons are directly transferred from DHAP (dihydroxyacetone
phosphate) to an FAD containing glycerol phosphate dehydrogenase
d.) Electrons are directly transferred from glycerol-3-phosphate and
DHAP.
Answer: Electrons are directly transferred from glycerol-3-phosphate to
FAD containing glycerol phosphate dehydrogenase (B)
⩥Heat can be generated by brown adipose tissue in hibernating
mammals. Which of the following is most likely the mechanism by
which this occurs?
BUNDLE 2026 ACCURATE QUESTIONS AND
ANSWERS COMPREHENSIVE STUDY PACK
GRADED A+
⩥Which of the following would be consistent with an exergonic
reaction?
a.) ∆S would be negative
b.) ∆G would be negative
c.) ∆S would be positive
d.)∆G would be positive.
Answer: ∆G would be negative (B)
⩥Which of the following describes the malate-aspartate shuttle system?
a.) Carries NADH from the cytoplasm directly into the mitochondria
,b.) Generates 2.5 molecules of ATP in mitochondria per each NADH
from glycolysis
c.) Moves NADH from the mitochondria to the cytoplasm
d.) Relies on malate dehydrogenase in the inner mitochondrial
membrane
e.) Requires reduction of pyruvate to lactate for oxidizing NADH.
Answer: Generates 2.5 molecules of ATP in mitochondria per each
NADH from glycolysis (B)
⩥ATP is a high energy molecule that is often hydrolyzed during
reactions. The energy within ATP is stored primarily in which of the
following components of the molecule?
a.) In the high energy phosphate bonds
b.) In the adenine base
c.) In the D-ribose group.
Answer: In the high energy phosphate bonds (A)
,⩥Dinitrophenol is an uncoupler of the electron transport chain. The
addition of dinitrophenol will have which of the following impacts?
a.) Decrease the pH of the intermembrane space
b.) Increase oxygen consumption
c.) Decrease oxidation of NADH
d.) Increase ATP production.
Answer: Increase oxygen consumption (B)
⩥In the malate aspartate shuttle, glutamate is converted to _______ in
the mitochondria while aspartate is converted to _______ in the cytosol.
a.) Oxaloacetate; malate
b.) alpha-ketoglutarate; oxaloacetate
c.) Oxaloacetate; glutamate
d.) Aspartate; alpha-ketoglutarate
, e.) Malate; oxaloacetate.
Answer: alpha-ketoglutarate; oxaloacetate (B)
⩥The glycerophosphate shuttle is a major shuttle of most tissues. Which
of the following best describes the transfer of electrons by this shuttle?
a.) Electrons are directly transferred from glycerol-3-phosphate to NAD
containing glycerol phosphate dehydrogenase
b.) Electrons are directly transferred from glycerol-3-phosphate to an
FAD containing glycerol phosphate dehydrogenase
c.) Electrons are directly transferred from DHAP (dihydroxyacetone
phosphate) to an FAD containing glycerol phosphate dehydrogenase
d.) Electrons are directly transferred from glycerol-3-phosphate and
DHAP.
Answer: Electrons are directly transferred from glycerol-3-phosphate to
FAD containing glycerol phosphate dehydrogenase (B)
⩥Heat can be generated by brown adipose tissue in hibernating
mammals. Which of the following is most likely the mechanism by
which this occurs?
