1. Chapter 8
Cellular Energy

2. Chapter 8
Cellular Energy
8.3 Cellular Respiration
The net yield from the Krebs cycle is six CO2 molecules, two ATP, eight NADH, and two FADH2.

3. Chapter 8
Cellular Energy
Ch 8 Cellular Energy
Using your clicker, check your mastery of Ch 8 objectives from this power point

4. Which statement describes the law of conservation of energy?
Chapter 8
Cellular Energy
Chapter Diagnostic Questions
Which statement describes the law of
conservation of energy?
Energy cannot be converted or destroyed.
Energy can be converted and destroyed.
Energy can be converted but not destroyed.
Energy can be destroyed but not converted. A B C D
CDQ 1

5. In which metabolic process are molecules
Chapter 8
Cellular Energy
Chapter Diagnostic Questions
In which metabolic process are molecules
broken down to produce carbon dioxide and
water?
photosynthesis
cellular respiration
homeostasis
fermentation A B C D
CDQ 2

6. At the end of the Calvin cycle, where is energy stored?
Chapter 8
Cellular Energy
Chapter Diagnostic Questions
At the end of the Calvin cycle, where is energy
stored?
NADPH
ATP
chloroplast
glucose A B C D
CDQ 3

7. Chapter 8
Cellular Energy
8.1 Formative Questions
Which law of thermodynamics explains why the ladybug receives the least amount of usable energy? A B
the first law of thermodynamics
the second law of thermodynamics
FQ 1

8. All of the energy from the food you eat comes from the sun.
Chapter 8
Cellular Energy
8.1 Formative Questions
All of the energy from the food you eat comes from the sun.
true
false A B
FQ 2

9. Why is adenosine triphosphate (ATP) such an
Chapter 8
Cellular Energy
8.1 Formative Questions
Why is adenosine triphosphate (ATP) such an
important biological molecule?
It captures light energy from the sun.
It is produced in anabolic pathways.
It stores and releases chemical energy.
It converts mechanical energy to thermal energy. A B C D
FQ 4

10. Where in the plant cell does photosynthesis take place?
Chapter 8
Cellular Energy
8.2 Formative Questions
Where in the plant cell does photosynthesis take place?
chloroplasts
Golgi apparatus
mitochondria
vacuoles A B C D
FQ 5

11. Which range of wavelengths is reflected by chlorophylls a and b?
Chapter 8
Cellular Energy
8.2 Formative Questions
Which range of wavelengths is reflected by chlorophylls a and b? nm nm nm A B C
FQ 6

12. What is the overall purpose of cellular respiration?
Chapter 8
Cellular Energy
8.3 Formative Questions
What is the overall purpose of cellular
respiration?
to make ATP
to process H2O
to store glucose
to deliver oxygen A B C D
FQ 9

13. Which represents the general sequence of cellular respiration?
Chapter 8
Cellular Energy
8.3 Formative Questions
Which represents the general sequence of
cellular respiration?
TCA cycle  chemiosmosis  glycolysis
glycolysis  Krebs cycle  electron transport
electron absorption  catalysis  phosphorylation
aerobic pathway  anaerobic pathway  fermentation A B C D
FQ 10

14. Which stage of cellular respiration is the anaerobic process?
Chapter 8
Cellular Energy
8.3 Formative Questions
Which stage of cellular respiration is the
anaerobic process?
glycolysis
Krebs cycle
electron transport A B C
FQ 11

15. CoA CO2 FADH2 NADH Which molecule generated by the Krebs
Chapter 8
Cellular Energy
8.3 Formative Questions
Which molecule generated by the Krebs
cycle is a waste product?
CoA
CO2
FADH2
NADH A B C D
FQ 12

16. Chapter 8
Cellular Energy
Chapter Assessment Questions
Look at the following figure. Which part of the chloroplast is a sac-like membrane arranged in stacks?
grana
stroma
thylakoids
Golgi apparatus A B C D
CAQ 1

17. pyruvate is broken down into what compound?
Chapter 8
Cellular Energy
Chapter Assessment Questions
During the Krebs cycle,
pyruvate is broken down
into what compound?
H2O O2 CO
CO2 A B C D
CAQ 2

18. Chapter 8
Cellular Energy
Chapter Assessment Questions
Look at the following figure. Which molecule is released when ATP becomes ADP?
phosphate group
water molecule
ribose sugar
energy cells A B C D
CAQ 3

19. A B Which metabolic process is photosynthesis?
Chapter 8
Cellular Energy
Standardized Test Practice
Which metabolic process is photosynthesis? A B A B
STP 1

20. At the beginning of photosynthesis, which
Chapter 8
Cellular Energy
Standardized Test Practice
At the beginning of photosynthesis, which
molecule is split to produce oxygen (O2) as
a waste product?
CO2
H2O
C6H12O6
3-PGA A B C D
STP 2

21. Which molecule helps provide the energy that drives this cycle?
Chapter 8
Cellular Energy
Standardized Test Practice
Which molecule helps provide the energy that drives this cycle?
3-PGA
CO2
NADPH
rubisco A B C D
STP 3

22. What is the final step of cellular respiration?
Chapter 8
Cellular Energy
Standardized Test Practice
What is the final step of cellular respiration?
O2 and H+ form H2O.
Electrons and H2O generate ATP.
C6H12O6 is broken down into CO2.
NADH and FADH2 gain electrons. A B C D
STP 5

23. an increased demand for ATP
Chapter 8
Cellular Energy
Standardized Test Practice
What prevents pyruvate from entering the Krebs cycle and instead results in this pathway?
a buildup of CO2
a lack of oxygen
an excess of glucose
an increased demand for ATP A B C D
STP 6

24. Good Luck On tomorrow’s test
Chapter 8
Good Luck
On tomorrow’s
test