1. The molecule that is most directly used to power different cell activities is

A. GlucoseB. SucroseC. ATPD. ADP

Glucose

Sucrose ATP

ADP

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2. How is an ATP molecule different from an ADP molecule?

A.The two molecules have a different sugar

B.The two molecules have a different nitrogen group

C.ADP has 2 phosphate groups, ATP as 3 phosphate groups

D.ATP has 2 phosphate groups, ADP as 3 phosphate groups

The two m

olecules h

ave a...

The two m

olecules h

ave a...

ADP has 2 phosp

hate gr...

ATP has 2

phosphate gr...

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ATP stands for adenosine triphosphate. The tri in the name tells you that it has a 3 phosphate group tail. The triphosphate tail is an important part of the molecule because it store energy in this high energy bond.

ADP stands for adenosine diphosphate. This molecule has 2 phosphate groups in its tail.

3. A reaction in which the products have more energy then the reactants, requiring an input of energy is called a(n)

A.ExergonicB.EndergonicC.SpontaneousD.Dissociation

Exergonic

Endergonic

Spontaneous

Dissocia

tion

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An endergonic reaction requires energy. (The prefix “endo” means into)• The products have more stored energy than the

reactants• Example: The production of glucose from carbon

dioxide and water requires energy (from the sun)

4. The reaction that produces an ATP from an ADP and a phosphate group is a(n)

A. exergonicB. endergonic

exergo

nic

endergonic

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ATP is a high energy molecule, with energy stored in the bond for the third phosphate group. It takes energy to produce an ATP from ADP and a phosphate group so this is an endergonic reaction.

5. The energy required to build an ATP molecule in the ATP/ADP cycle can come from

A. The building of a sugar molecule

B. The breakdown of a sugar molecule under anaerobic conditions

C. The breakdown of a sugar molecule under aerobic conditions

D. A, B and CE. Both B and C

The building of a

sugar m

...

The breakdown of a

sug..

The breakdown o

f a su

g..

A, B and C

Both B and C

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6. The energy released by the break down of ATP into ADP and a phosphate group may be used for

A.Movement (allowing contraction of muscle fibers)

B.Synthesizing (building) macromolecules- such as proteins

C.Active transport of substancesD.All of the aboveE.None of the above Move

ment (allo

wing con...

Synthesiz

ing (build

ing) ...

Active

transp

ort of s

ubst...

All of th

e above

None of the ab

ove

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ATP is the energy currency of the cell. The energy released in the break down of ATP is used to power many cellular activities.

There is a constant cycling in the cell as ATP is produced from ADP and P with the energy provided from the breakdown of food. Energy is released for cell activities as ATP is broken back down into ADP and P

7. The reactants in photosynthesis are

A.carbon dioxide (CO2) & oxygen (O2) B.carbon dioxide (CO2) & glucose

(C6H12O6

C.carbon dioxide (CO2) & water (H2O)D.oxygen (O2) & glucose (C6H12O6)E.water (H2O) & glucose (C6H12O6)

carbon dioxid

e (CO2) &

...

carbon d

ioxide (CO2) &

g...

carbon dioxid

e (CO2) &

...

oxyge

n (O2) &

gluco

se (..

.

water (H2O) &

glucose (..

.

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8. The products of photosynthesis areA.carbon dioxide (CO2) & oxygen (O2) B.carbon dioxide (CO2) & glucose

(C6H12O6)C. carbon dioxide (CO2) & water(H2O)D.oxygen (O2) & glucose (C6H12O6)E.oxygen (O2) & water (H2O)

carbon dioxid

e (CO2) &

...

carbon d

ioxide (CO2) &

...

carbon dioxide (C

O2) & ...

oxyge

n (O2) &

gluco

se (..

.

oxyge

n (O2) &

water (

H2O)

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9. The term aerobic means

A.with oxygenB.without oxygenC.with waterD.without water

with oxyg

en

without o

xyge

n

with w

ater

without w

ater

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10. Which of the following is an anaerobic process (occurs without oxygen)?

A. Kreb’s Cycle and electrons transport chainB. Lactic acid fermentationC. Alcohol fermentationD. A and BE. A and CF. B and C

Kreb’s Cycl

e and electr

ons...

Lacti

c acid

ferm

entation

Alcohol fe

rmentation

A and B

A and C

B and C

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11. Which process occurs in our muscles when we work out very hard (demanding lots of ATP) and our circulatory system can not deliver an adequate amount of oxygen to meet the demands (anaerobic conditions).?

A. Kreb’s cycleB. Lactic acid fermentationC. Alcohol fermentationD. Both B and C

Kreb’s cycl

e

Lacti

c acid

ferm

entation

Alcohol fe

rmentation

Both B and C

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12. Name an organism that can perform alcohol fermentation.

A. YeastB. Grape plantsC. HumansD. All of the aboveE. A and BF. A and CG. B and C

Yeast

Grape plants

Humans

All of th

e above

A and B

A and C

B and C

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13. Glycolysis is the process in which a glucose molecule is broken down into 2 pyruvate molecules and the energy released is used to produce 2 ATP molecules. Glycolysis is the first phase in which of the following

A. Fermentation (both kinds)

B. Aerobic respirationC. Both A and BD. Neither A nor B

Ferm

entation (both kinds)

Aerobic resp

iration

Both A and B

Neither A

nor B

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14. Flasks A and B both contain a yeast solution and are under anaerobic conditions. Flask A also contains glucose, flask B does not contain glucose. You would expect the amount of ATP to

A. Increase in both flasksB. Decrease in both flasksC. Increase in flask A but not

flask BD. Increase in flask B but not

flask A

Increase

in both flasks

Decrease

in both flask

s

Increase

in flask

A but n

o...

Increase

in flask

B but not...

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Yeast can perform anaerobic fermentation to produce ATP, but they require a food source- glucose etc.

15. Flasks C and D both contain yeast, and a glucose solution. Flask C has no O2 and flask D has O2. You would expect a decrease in glucose ____

A. in both flasksB. in flask C but not DC. in flask D but not CD. neither (glucose will

increase in both)

in both flasks

in flask C but not D

in flask D but not C

neither (g

lucose

will

inc...

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Yeast are an organism that can perform both aerobic respiration and anaerobic alcohol fermentation. They will be able to breakdown the sugar molecules for energy under both conditions.

16. Flasks E and F both contain yeast, and a glucose solution. Flask E has no O2 and flask F has O2. You would expect

A. More ATP production in flask E

B. More ATP production in flask F

C. More ATP consumption in flask E

D. More ATP consumption in flask F

More ATP producti

on in f..

.

More ATP producti

on in f..

.

More ATP consu

mption in...

More ATP consu

mption in...

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17. The site of aerobic respiration is the

A.ribosomeB.endoplasmic reticulumC.chloroplastD.mitochondrion

riboso

me

endoplasmic r

eticulum

chloroplast

mitoch

ondrion

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18. Which of the following are differences between fermentation and aerobic respiration.

I. aerobic respiration requires oxygen, fermentation does notII. fermentation requires oxygen, aerobic respiration does notIII. Fermentation produces more ATPIV. aerobic respiration produces more ATP

A. I onlyB. II onlyC. I and IIID. I and IVE II and IIIF. II and IV

I only

II only

I and III

I and IV

E II and III

F. II

and IV

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Glycolysis

No additional ATP Allows glycolysis to continue by recycling NAD+

19. A process requires the energy from 5 ATP in order to be initiated, but produces 12 ATP in the later stages, the net yield of ATP is

A. 60B. 17C. 12D. 7E. 5

60 17 12 7 5

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1. C2. C3. B4. B5. E6. D7. C8. D9. A10.F11.B

12.A13.C14. C15. A16. B17. D18. D19. D