Ch 9 Pretest: Cell respiration
Name: _____________________________ Period: _____ Date: _________________________
Matching:
1. G. alcohol Product of anaerobic respiration with
fermentation
2. D. glycolysis First step of cellular respiration,
in the cytoplasm
takes place
3. C. aerobic respiration Respiration that can only take place in
the presence of oxygen
4. H. matrix The space inside the “folds” in the mitochondria
5. A. cell respiration Process of making chemical energy (food)
into ATP
6. L. Electron transport chain Series of proteins that pass
electrons and gain the most energy in cellular respiration
7. K. Krebs cycle Second stage of cellular respiration; happens
in the matrix of the mitochondria
8. B. anaerobic respiration Processes where cells get energy
without the use of oxygen
9. J. pyruvic acid Product of glycolysis, a 3 carbon compound
10. I. cristae “Folds” inside the mitochondria where the electron
transport chain takes place
11. E. fermentation Process that will happen after glycolysis if
there is not enough oxygen
12. F. lactic acid This product will form in our cells if there is
not enough oxygen for the Krebs Cycle
Ch 9 Pretest: Cell respiration
Name: _____________________________ Period: _____ Date: _________________________
13. – 16. Write the balanced equation for cellular respiration (4 pts.)
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (as ATP)
17. – 19. Cellular respiration is often described as the opposite of photosynthesis. Do
you agree or disagree? Support your answer. (3 pts.)
20. – 22. The Krebs cycle and Electron Transport Chain can only occur in the
presence of oxygen. Describe what happens if there is not enough oxygen for
the cell. Include the amount of ATP created, waste products and any other
benefits. (3 pts.)
When no oxygen is present the cell will use fermentation to
replace NAD+ to run glycolysis, no ATP will be produced.
Use the letters below to label the diagram. The structure you are seeing is a
mitochondria, not a cell. Letters may be used once, more than once or not at all.
A. 1
D. glycolysis
G. oxygen
J. pyruvic acid
M. water
O. glucose
B. 2
E. cytoplasm
H. matrix
K. Krebs cycle
N. carbon dioxide
C. 34
F. NADH, FADH2
I. cristae
L. Electron transport
chain
32.
30.
34.
24.
23.
27.
29.
33.
25.
36.
35.
26.
28.
31.
37.
Ch 9 Pretest: Cell respiration
Name: _____________________________ Period: _____ Date: _________________________
23. _____
28. _____ (waste product)
33. _____ (process)
24. _____ (process)
29. _____ (process)
34. _____ (location)
25. _____ (cell location)
30. _____ (location)
35. _____
26. _____ (# ATP)
31. _____ (# ATP)
36. _____ (waste product)
27. _____
32. _____
37. _____ (# ATP)
Fill in the blank:
In glycolysis 38._________Sugar___is converted into
39. ____pyvruate____. This produces 40. _____2__ ATP and happens in the
41. __cytoplasm___ of the cell. Energy is carried by 42. __NADH, __ to the
Electron Transport Chain (ETC). The other steps of cellular respiration only take
place in the presence of 43. __oxygen. If there isn’t enough (43.) then 44.
_____fermentation will take place instead, producing either
45. ____latic
acid or 46. ____alcohol.
(39.) is converted to 47. __acetyl
CoA______ and it enters the Krebs Cycle,
which takes place in the 48. ____matrix of the mitochondria and produces 49.
____2__ ATP. Energy is carried by (42.) and 50. ___ FADH2__ to the ETC. 51.
___carbon
dioxide___ is a waste product.
The final stage of cellular respiration is the Electron Transport Chain (ETC),
which takes place in the 52. ____Cristae_____ of the mitochondria. (43.) is required
for this to happen, as well as the energy carriers (42.) and (50).
53. ___34____ ATP is created and 54. _____Water__ is given off as a waste product.
Ch 9 Pretest: Cell respiration
Name: _____________________________ Period: _____ Date: _________________________
Ch 9 Pretest: Cell respiration
Name: _____________________________ Period: _____ Date: _________________________
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