Ch. 9 Answers: Cellular Respiration/Fermentation Review Sheet
1. Write the chemical equation for cellular respiration.
C6H12O6 + 6O2 + 6H2O  6CO2 + 12H2O + 40ATP’S
GLUCOSE
OXYGEN
WATER
CARBON DIOXIDE
WATER
ENERGY
2. Identify the reactants needed for cellular respiration.
GLUCOSE, OXYGEN, WATER
3. Identify the products of cellular respiration.
CARBON DIOXIDE, WATER, 40 ATP
4. What group of special protein molecules catalyzes the reactions that take place
during cellular respiration? ENZYMES
5. Where in the cell does cellular respiration occur? Name the organelle.
MITOCHONDRIA
6.
Label the parts of the mitochondria. outer membrane,
inner membrane, cristae (folds on the inner membrane), fluid matrix
7. Where do we get glucose from?
FOODS WE EAT
8. What gas combines with glucose in order for glucose to break down? Hint: We
breathe this gas in. OXYGEN
9. Where does the pyruvic acid formed in glycolysis come from?
THE SPLITTING OF GLUCOSE
10. What type of organisms carry out glycolysis? ALL ORGANISMS
(BACTERIA/PROKARYOTES, PROTISTS, FUNGI, PLANTS, ANIMALS)
11. What type of organisms carry out cellular respiration?
FUNGI, PROTISTS, PLANTS, ANIMALS
(ALL HAVE MITOCHONDRIA)
12. Are these organisms in #11 prokaryotes or eukaryotes? EUKARYOTES
13. What does cellular respiration produce for our cells? ENERGY/40 ATP’S
14. Where is the energy in glucose stored? IN THE CHEMICAL BONDS OF
THE GLUCOSE MOLECULE
15. What do humans & animals do with the CO2 produced when glucose breaks
down? EXHALE IT
16. What do plants do with the CO2 produced during cellular respiration?
RECYCLE IT TO PHOTOSYNTHESIS (CHLOROPLAST)
17. What do we do with the H2O produced when glucose breaks down?
RELEASE IT (PERSPIRATION, EXHALE, URINATE) OR
RE-USE TO REHYDRATE CELLS
18. What do plants do with the H2O they produce during cellular respiration?
RECYCLE TO PHOTOSYNTHESIS (CHLOROPLAST) OR
RELEASE TO AIR BY TRANSPIRATION
19. How many ATP’s of energy are produced from one molecule of glucose? 40
20. Name 5 ways we use this energy. BREATHING, WALKING, RUNNING,
DIGESTING FOOD, PUMPING BLOOD, ALL BODY MOVEMENTS,
AND FOR ALL CELL ACTIVITIES/CHEMICAL REACTIONS.
21. Name the 4 stages of cellular respiration.
GLYCOLYSIS, CONVERSION OF PYRUVATE, KREBS’ CITRIC
ACID CYCLE, ELECTRON TRANSPORT CHAIN PER 2
22. What does glycolysis mean?
SPLITTING OF GLUCOSE
23. Where in the cell does glycolysis occur?
CYTOPLASM
24. What is glucose broken down into during glycolysis?
2 PYRUVIC ACID MOLECULES (2 PYRUVATE)
25. Does glycolysis need/require O2?
NO
26.Is glycolysis an anaerobic or aerobic process? ANAEROBIC
27. How many ATP’s does it take to begin glycolysis? 2ATP’S
28. Where do these ATP’s that start glycolysis come from? CYTOPLASM
29. How many total ATP’s (gross ATP production) are produced during glycolysis?
4ATP’S
30. Are the conversion of pyruvate, Kreb’s citric acid cycle and the electron transport
chain aerobic or anaerobic processes? AEROBIC – NEEDS OXYGEN
31. Where does the conversion of pyruvate, Kreb’s citric acid cycle and the electron
transport chain occur in the cell?
MITOCHONDRIA
32. What’s the function of the Electron Transport Chain?
PRODUCES 34 ATPs & FORMS 12 WATER MOLECULES
33. Name the 2 hydrogen acceptor molecules involved in cellular respiration.
NAD & FAD
34. Three ATP’s worth of energy is stored in the hydrogen acceptor. NADH2
35. Two ATP’s worth of energy is stored in the hydrogen acceptor. FADH2
36. How many ATP’s are produced in glycolysis? 4ATP’S
37. How many ATP’s are produced during the Kreb’s citric acid cycle? 2ATP’S
38. How many ATP’s are produced via the electron transport chain? 34 ATP’S
39. Name the 6 carbon molecule produced in the Krebs cycle. CITRIC ACID
40. What substance bonds with the de-energized hydrogen ions at the bottom of the
electron transport chain? OXYGEN What is formed when these 2 molecules
combine? WATER
41. What does fermentation mean? ANAEROBIC METABOLIC BREAKDOWN
OF ORGANIC MOLECULES.
42. Name the 2 types of fermentation.
ALCOHOL FERMENTATION
LACTIC ACID FERMENTATION
43. What organisms carry out alcohol fermentation? YEAST
44. Equation for alcohol fermentation.
2ATP
2NAD
IN
2NAD OUT
BACK TO GLYCOLYSIS
GLUCOSE  2 PYRUVIC ACID  2 ETHYL ALCOHOL + 2CO2
OUT
4ATP
2NADH2
2NADH
DROP OFF HYDROGEN
45. Does alcohol fermentation require oxygen? NO – ANAEROBIC PROCESS
46. Why does bread dough rise? CARBON DIOXIDE GAS RELEASED BY
THE YEAST CELLS DURING ALCOHOL FERMENTATION
47. What happens to the alcohol in bread dough?
EVAPORATES DURING THE BAKING/COOKING PROCESS
48. What organisms carry out lactic acid fermentation?
HUMAN/ANIMAL MUSCLE CELLS
49. After we exercise strenuously our muscles are sore. Why?
LACTIC ACID BUILDS UP IN THE MUSCLE CELLS.
50. Equation for lactic acid fermentation.
2ATP 2NAD
IN
2NAD OUT
BACK TO GLYCOLYSIS
GLUCOSE  2 PYRUVIC ACID  2 LACTIC ACID
OUT
4ATP 2NADH2
2NADH2
DROP OFF HYDROGEN
51. Does lactic acid fermentation require oxygen? NO – ANAEROBIC PROCESS
52. Does cellular respiration require oxygen? YES - AEROBIC PROCESS
53. How often does cellular respiration occur in our bodies?
ALL THE TIME
Table 2 – Answer the following questions in the appropriate box.
Animals
Plants
How do these organisms
obtain the oxygen they
need for cellular
respiration?
How do these organisms
get the glucose they
need for cellular
respiration?
How do these organisms
get the water they
need for cellular
respiration?
What do these
organisms do with the
water made during
cellular respiration?
What do these
organisms do with the
carbon dioxide made
during cellular
respiration?
What do these
organisms do with the
40 ATPs made during
cellular respiration?
Breathe it in/ inhale
from the air.
From the air, it enters
pores in the leaf
called stomata; or
recycle from
photosynthesis
From the foods they
eat.
Photosynthesis
produces glucose.
Drink it.
Absorb water from
soil thru roots.
Reuse it in cytoplasm,
blood plasma, tissue
fluid; exhale some
every time we
breathe out or talk;
excrete it as urine.
Reuse some for
photosynthesis, to
form more cytoplasm,
& in the water
vacuole to maintain
shape of cell; excess
water leaves thru the
stomata
(transpiration).
Exhale it.
Recycle to
photosynthesis
Use for all cellular
activities.
Use for all cellular
activities.