BIL150 EXAM 3 UPDATED QUESTIONS AND ANSWERS
A coupled cellular reaction is one where?
a) a signal molecule activates a G-protein
b) molecules move only passively down a gradient
c) water's actively transported out a cell
d) exocytosis releases cellular material out of a cell
e) none of these are correct - CORRECT ANSWER✅✅none of these are correct
Which of the following molecules is a 2nd messenger that is activated by the hormone epinephrine? -
CORRECT ANSWER✅✅cyclic AMP (cAMP)
The energy released by the transfer of electrons through the electron transport chain is used to
generate a proton gradient in mitochondria by pumping H+ ions into which of the following cellular
locations? - CORRECT ANSWER✅✅into the space between inner and outer mitochondrial membranes
In addition to ATP, what are the end products of glycolysis? - CORRECT ANSWER✅✅NADH and pyruvate
ADP itself is a structural part of which of the following molecules or coenzymes that are found and used
in cellular respiration? - CORRECT ANSWER✅✅in all of these (NAD+, FADH2, CoASH, and ATP)
Which cellular respiration metabolic pathway is common to both the processes of fermentation and
aerobic cellular respiration? - CORRECT ANSWER✅✅glycolysis
A decarboxylation reaction releases? - CORRECT ANSWER✅✅CO2
The molecule that functions as the reducing agent (electron donor) in a redox reaction? - CORRECT
ANSWER✅✅loses electrons and loses potential energy
Where does glycolysis take place in eukaryotic plant cells?
a) mitochondrial mitoplasm
, b) chloroplast thylakoid membranes
c) perimitochondrial space
d) mitochondrial outer membrane
e) none of these are correct - CORRECT ANSWER✅✅none of these are correct
Which of the following statements best describes role of NAD+ in cell respiration? - CORRECT
ANSWER✅✅NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle
During cellular respiration, acetyl CoA accumulates in which of these intracellular locations? - CORRECT
ANSWER✅✅in the mitochondrial mitoplasm
CO2 is released during which of the following stages of cellular respiration?
a) oxidation of pyruvate to acetyl CoA
b) alcoholic fermentation
c) the Krebs citric acid cycle
d) only b and c
e) a, b, and c - CORRECT ANSWER✅✅a, b, and c
As electrons flow along the ETC of mitochondria, which of the following occurs? - CORRECT
ANSWER✅✅the pH of the mitoplasm increases
Where does the Calvin cycle take place? - CORRECT ANSWER✅✅in the chloroplasm of the chloroplast
(stroma)
In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space,
whereas in chloroplasts, chemiosmosis translocates protons from? - CORRECT ANSWER✅✅the
chloroplasm into the thylakoid space
Photorespiration occurs when rubisco reacts Ribulose-biphosphate with? - CORRECT ANSWER✅✅O2
A coupled cellular reaction is one where?
a) a signal molecule activates a G-protein
b) molecules move only passively down a gradient
c) water's actively transported out a cell
d) exocytosis releases cellular material out of a cell
e) none of these are correct - CORRECT ANSWER✅✅none of these are correct
Which of the following molecules is a 2nd messenger that is activated by the hormone epinephrine? -
CORRECT ANSWER✅✅cyclic AMP (cAMP)
The energy released by the transfer of electrons through the electron transport chain is used to
generate a proton gradient in mitochondria by pumping H+ ions into which of the following cellular
locations? - CORRECT ANSWER✅✅into the space between inner and outer mitochondrial membranes
In addition to ATP, what are the end products of glycolysis? - CORRECT ANSWER✅✅NADH and pyruvate
ADP itself is a structural part of which of the following molecules or coenzymes that are found and used
in cellular respiration? - CORRECT ANSWER✅✅in all of these (NAD+, FADH2, CoASH, and ATP)
Which cellular respiration metabolic pathway is common to both the processes of fermentation and
aerobic cellular respiration? - CORRECT ANSWER✅✅glycolysis
A decarboxylation reaction releases? - CORRECT ANSWER✅✅CO2
The molecule that functions as the reducing agent (electron donor) in a redox reaction? - CORRECT
ANSWER✅✅loses electrons and loses potential energy
Where does glycolysis take place in eukaryotic plant cells?
a) mitochondrial mitoplasm
, b) chloroplast thylakoid membranes
c) perimitochondrial space
d) mitochondrial outer membrane
e) none of these are correct - CORRECT ANSWER✅✅none of these are correct
Which of the following statements best describes role of NAD+ in cell respiration? - CORRECT
ANSWER✅✅NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle
During cellular respiration, acetyl CoA accumulates in which of these intracellular locations? - CORRECT
ANSWER✅✅in the mitochondrial mitoplasm
CO2 is released during which of the following stages of cellular respiration?
a) oxidation of pyruvate to acetyl CoA
b) alcoholic fermentation
c) the Krebs citric acid cycle
d) only b and c
e) a, b, and c - CORRECT ANSWER✅✅a, b, and c
As electrons flow along the ETC of mitochondria, which of the following occurs? - CORRECT
ANSWER✅✅the pH of the mitoplasm increases
Where does the Calvin cycle take place? - CORRECT ANSWER✅✅in the chloroplasm of the chloroplast
(stroma)
In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space,
whereas in chloroplasts, chemiosmosis translocates protons from? - CORRECT ANSWER✅✅the
chloroplasm into the thylakoid space
Photorespiration occurs when rubisco reacts Ribulose-biphosphate with? - CORRECT ANSWER✅✅O2
