Bio 121 Exam 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which of the following molecules is broken down in cellular respiration, providing fuel for the
cell? - CORRECT ANSWER - glucose
Which energy-rich molecule produced by cellular respiration directly powers cell work? -
CORRECT ANSWER - ATP
the correct sequence of steps as energy is extracted from glucose during cellular respiration. -
CORRECT ANSWER - glycolysis → acetyl CoA → citric acid cycle → electron transport
chain
What is the correct general equation for cellular respiration? - CORRECT ANSWER -
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy
Which of the following processes takes place in the cytosol of a eukaryotic cell? - CORRECT
ANSWER - glycolysis
In what organelle would you find acetyl CoA formation, the citric acid cycle, and the electron
transport chain? - CORRECT ANSWER - mitochondrion
Which statement describes glycolysis? - CORRECT ANSWER - This process splits
glucose in half and produces 2 ATPs for each glucose.
Which statement describes the citric acid cycle? - CORRECT ANSWER - This process
produces some ATP and carbon dioxide in the mitochondrion
Which statement describes the electron transport chain? - CORRECT ANSWER - This
process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in
cellular respiration.
, A process is referred to as aerobic if it requires ________. - CORRECT ANSWER -
oxygen
Large amounts of oxygen gas first appeared in Earth's atmosphere about ________ of years ago.
- CORRECT ANSWER - billions
Lactic acid buildup in muscles is a sign that ________. - CORRECT ANSWER -
insufficient oxygen is reaching the muscles
Which claim about the history of the Earth has the most scientific support? - CORRECT
ANSWER - Anaerobic organisms must have come first because there was no oxygen in
the atmosphere
The waste products of cellular respiration include ________. - CORRECT ANSWER -
water and carbon dioxide
Plant cells ________. - CORRECT ANSWER - have mitochondria and chloroplasts
What compound directly provides energy for cellular work? - CORRECT ANSWER -
ATP
The ultimate source of energy in food is ________. - CORRECT ANSWER - the sun
Photosynthetic organisms are ________. - CORRECT ANSWER - producers that make all
their own organic matter from inorganic molecules
Plants use photosynthesis to ________. - CORRECT ANSWER - store chemical energy,
and they use cellular respiration to harvest energy from organic molecules
Exam Questions and CORRECT Answers
Which of the following molecules is broken down in cellular respiration, providing fuel for the
cell? - CORRECT ANSWER - glucose
Which energy-rich molecule produced by cellular respiration directly powers cell work? -
CORRECT ANSWER - ATP
the correct sequence of steps as energy is extracted from glucose during cellular respiration. -
CORRECT ANSWER - glycolysis → acetyl CoA → citric acid cycle → electron transport
chain
What is the correct general equation for cellular respiration? - CORRECT ANSWER -
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy
Which of the following processes takes place in the cytosol of a eukaryotic cell? - CORRECT
ANSWER - glycolysis
In what organelle would you find acetyl CoA formation, the citric acid cycle, and the electron
transport chain? - CORRECT ANSWER - mitochondrion
Which statement describes glycolysis? - CORRECT ANSWER - This process splits
glucose in half and produces 2 ATPs for each glucose.
Which statement describes the citric acid cycle? - CORRECT ANSWER - This process
produces some ATP and carbon dioxide in the mitochondrion
Which statement describes the electron transport chain? - CORRECT ANSWER - This
process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in
cellular respiration.
, A process is referred to as aerobic if it requires ________. - CORRECT ANSWER -
oxygen
Large amounts of oxygen gas first appeared in Earth's atmosphere about ________ of years ago.
- CORRECT ANSWER - billions
Lactic acid buildup in muscles is a sign that ________. - CORRECT ANSWER -
insufficient oxygen is reaching the muscles
Which claim about the history of the Earth has the most scientific support? - CORRECT
ANSWER - Anaerobic organisms must have come first because there was no oxygen in
the atmosphere
The waste products of cellular respiration include ________. - CORRECT ANSWER -
water and carbon dioxide
Plant cells ________. - CORRECT ANSWER - have mitochondria and chloroplasts
What compound directly provides energy for cellular work? - CORRECT ANSWER -
ATP
The ultimate source of energy in food is ________. - CORRECT ANSWER - the sun
Photosynthetic organisms are ________. - CORRECT ANSWER - producers that make all
their own organic matter from inorganic molecules
Plants use photosynthesis to ________. - CORRECT ANSWER - store chemical energy,
and they use cellular respiration to harvest energy from organic molecules
