Name: 
 

EOC Practice : Flow of Matter & Energy



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The illustration below shows a desert food web.

mc001-1.jpg



Which animal receives the greatest amount of the original energy found in the producers?
a.
Quail
c.
Lizard
b.
Hawk
d.
Mountain Lion
 

 2. 

A grassland food web is shown here.

mc002-1.jpg


Which animal receives the least amount of energy in the food web?
a.
Frog
c.
Mouse
b.
Hawk
d.
Snake
 

 3. 

An energy pyramid is shown below.
mc003-1.jpg

How much of the energy consumed by the worm will likely be available to the frog?
a.
0.1%
c.
10%
b.
1%
d.
100%
 

 4. 

A food chain is shown below. 
    
     phytoplankton--> zooplankton -->lobster -->octopus --> shark

Between which two organisms does energy directly flow?
a.
phytoplankton and shark
c.
lobster and shark
b.
zooplankton and shark
d.
octopus and shark
 

 5. 

A marine energy pyramid is shown below.
mc005-1.jpg
Which organism receives the most amount of energy from the producer?
a.
Arctic Cod
c.
Copepod
b.
Polar Bear
d.
Seal
 

 6. 

Students perform a scientific investigation using several types of bacteria grown in liquid cultures. After incubating the bacterial cultures in test tubes for several days, they observe some of the bacteria growing close to the surface of the liquid and other types of bacteria growing at the bottom of the test tubes. Which cellular process does the bacteria that grows close to the surface of the liquid culture most likely use to produce its energy?
a.
DNA replication
c.
aerobic respiration
b.
DNA transcription
d.
anaerobic respiration
 

 7. 

Some bacteria are able to perform aerobic respiration, and others are able to perform anaerobic respiration. Which step of respiration is found in both aerobic and anaerobic respiration?
a.
glycolysis
c.
citric acid cycle
b.
fermentation
d.
electron transport chain
 

 8. 

Students research two types of prokaryotes that survive in different environments.  Prokaryote 1 lives in an environment that enables aerobic respiration, and Prokaryote 2 lives in an environment that only allows anaerobic respiration. Which statement about the two types of prokaryotes is most true?
a.
Prokaryote 2 could be found living on the surface of human skin.
c.
Prokaryote 2 requires sunlight to be present for respiration to occur.
b.
Prokaryote 1 could be found living on the bottom of a hot spring.
d.
Prokaryote 1 produces more energy during respiration than Prokaryote 2.
 

 9. 

Energy is produced through the process of cellular respiration in all living organisms. Aerobic respiration occurs through the use of oxygen, while anaerobic respiration does not use oxygen. Which statement about anaerobic respiration is correct?
a.
Anaerobic respiration occurs in the chloroplasts of cells.
c.
Anaerobic respiration yields less energy than aerobic respiration.
b.
Anaerobic respiration occurs in the mitochondria of cells.
d.
Anaerobic respiration is a more efficient process than aerobic respiration.
 

 10. 

A representation of a chemical reaction is shown below.

     glucose    +    oxygen    ------>    carbon dioxide    +    water    +    energy


Which process is shown in this representation?
a.
phagocytosis
c.
aerobic respiration
b.
photosynthesis
d.
anaerobic respiration
 

 11. 

Glucose produced during photosynthesis is used during cellular respiration to yield ATP. What is the original source of energy used during photosynthesis that is stored in glucose molecules?
a.
carbon dioxide
c.
heat
b.
oxygen
d.
light
 

 12. 

Cellular respiration and photosynthesis both require an energy source. What is the energy source for cellular respiration but not for photosynthesis?
a.
heat
c.
chemical potential
b.
light
d.
electrical potential
 

 13. 

A diagram of energy transfer for the process of photosynthesis and cellular respiration is shown below.
mc013-1.jpg
Which statement is true about the reactants in photosynthesis and cellular respiration?
a.
Photosynthesis requires energy; cellular respiration only produces energy.
c.
Photosynthesis requires sunlight and oxygen; cellular respiration requires glucose.
b.
Photosynthesis reactants are gases; cellular respiration reactants are solids.
d.
Photosynthesis reactants are low-energy molecules; cellular respiration reactants are high-energy molecules.
 

 14. 

Cellular respiration and photosynthesis occur in biological organisms. Which statement is most true about cellular respiration and photosynthesis?
a.
Cellular respiration requires energy and photosynthesis does not.
c.
Sugar and oxygen are reactants for photosynthesis and cellular respiration.
b.
Cellular respiration and photosynthesis produce the same products.
d.
ATP is a product of cellular respiration and starch is a product of photosynthesis.
 

 15. 

Which product of photosynthesis is a reactant for cellular respiration?
a.
light
c.
sugar
b.
carbon dioxide
d.
ATP
 

 16. 

A recent study has shown that human activities have affected the water cycle and caused rainfall patterns to change as shown on the figure below.
mc016-1.jpg
How do these changes in precipitation most likely impact the ecosystems of these areas?
a.
Areas of decreased precipitation have a decrease in biodiversity.
c.
Areas of increased precipitation become rain forests.
b.
Areas of decreased precipitation have an increase in biodiversity.
d.
Areas of increased precipitation become deserts.
 

 17. 

A representation of the carbon cycle is shown below.

mc017-1.jpg

If the amount of atmospheric carbon dioxide were decreased, what would be the most direct effect on the ecosystems?
a.
Decomposers would decrease in number.
c.
Producers would have less material for making food.
b.
Some consumers would become photosynthetic.
d.
Consumers and producers would increase the rate of respiration.
 

 18. 

A representation of the nitrogen cycle is shown in the diagram below.
mc018-1.jpg

If nitrogen fixation by bacteria were to decrease, what direct effect would this have on the ecosystem?
a.
Consumers would not have a reactant for respiration.
c.
Plants could not make proteins because of the lack of ammonia in the soil.
b.
Producers would not have a reactant for photosynthesis.
d.
Animal growth would be limited from availability of ammonia in the soil.
 

 19. 

The burning of forests and fossil fuels released carbon into the carbon cycle. How could this impact an ecosystem?
a.
The amount of organic carbon in the soil could increase.
c.
The amount of organic carbon in the atmosphere could decrease.
b.
The amount of carbon dioxide dissolved in water could increase.
d.
The amount of carbon dioxide available for photosynthesis could decrease.
 

 20. 

Scientific evidence supports the reports that average global temperatures are increasing. If global temperatures continue to rise, the water cycle will be impacted. The figure below shows the water cycle.
mc020-1.jpg

Which statement best describes how increased global temperatures would affect a marine ecosystem.
a.
Sea levels would decrease and lead to a lack of habitat for coastal communities.
c.
The drop in sea levels would increase the number of fish and marine mammals closer to the coast lines.
b.
An increase in sea levels would damage the coral reefs and lead to decreases in biodiversity.
d.
There would be no change because the ocean communities are able to compensate and adapt to changes in water level.
 



 
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