Question
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10. Which of the following is the best evidence that supports the rule that only 10% of energy is transferred from one organism to another?(1 point)
Responses
Not all organisms at the lower trophic levels will be eaten and die.
Not all organisms at the lower trophic levels will be eaten and die.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Question 11
11. Do both animal and plant cells have mitochondria? Why or why not?(1 point)
Responses
No; plants don’t perform any processes for which mitochondria would be used.
No; plants don’t perform any processes for which mitochondria would be used.
Yes; they both need mitochondria to convert radiant energy into chemical energy.
Yes; they both need mitochondria to convert radiant energy into chemical energy.
No; plants use chloroplasts the way animals use mitochondria.
No; plants use chloroplasts the way animals use mitochondria.
Yes; they both need mitochondria for cellular respiration.
Yes; they both need mitochondria for cellular respiration.
Question 12
12. Chemosynthesis relies on which energy source?(1 point)
Responses
thermal
thermal
nuclear
nuclear
light
light
chemical
chemical
Question 13
13. What would be 2 sources from which heterotrophs obtain food?(1 point)
Responses
The Sun and the grass
The Sun and the grass
The grass and dead organic matter
The grass and dead organic matter
Chemicals in the environment and mice
Chemicals in the environment and mice
Insects and Bird Eggs
Insects and Bird Eggs
Question 14
14. Most chemosynthetic organisms live in which of the following environments?(1 point)
Responses
Desert Environments
Desert Environments
Marine Environments
Marine Environments
Arctic Environments
Arctic Environments
Forest Environments
Forest Environments
Question 15
15. How did DDT unexpectedly impact the food chain?(1 point)
Responses
DDT was directly toxic to humans
DDT was directly toxic to humans
DDT killed too many insects
DDT killed too many insects
DDT interfered with bird reproduction by weakening their egg shells
DDT interfered with bird reproduction by weakening their egg shells
DDT caused birth defects in mice
DDT caused birth defects in mice
Question 16
16. Why are decomposers important to Earth ecosystem?(1 point)
Responses
Decomposers remove toxins from the environment
Decomposers remove toxins from the environment
Decomposers provide a food source for autotrophs
Decomposers provide a food source for autotrophs
Decomposers allow matter to recycle through the Ecosystem
Decomposers allow matter to recycle through the Ecosystem
Decomposers create fly larvae
Decomposers create fly larvae
Question 17
17. Which of the following is TRUE about Chemosynthesis?(1 point)
Responses
Chemosynthesis requires light to function
Chemosynthesis requires light to function
Chemosynthesis is used by most complex organisms
Chemosynthesis is used by most complex organisms
Chemosynthesis requires free chemicals in the environment
Chemosynthesis requires free chemicals in the environment
Chemosynthesis is how animals digest organic matter.
Chemosynthesis is how animals digest organic matter.
Question 18
18. The Ocean stores carbon from its interactions with the atmosphere, so the ocean serves as a ___________ for the Carbon Cycle. (1 point)
Responses
Carbon Flux
Carbon Flux
Carbon Dioxide
Carbon Dioxide
Carbon Sink
Carbon Sink
Carbon Source
Carbon Source
Question 19
19. How do plants contribute to the Carbon Cycle?(1 point)
Responses
They exhale carbon dioxide
They exhale carbon dioxide
They serve as a carbon sink by creating living matter from Carbon Dioxide
They serve as a carbon sink by creating living matter from Carbon Dioxide
They use Carbon Dioxide in the Process of Photosynthesis
They use Carbon Dioxide in the Process of Photosynthesis
Both B and C
Both B and C
Question 20
20. What is the overall effect of excessive Carbon Dioxide in the atmosphere?(1 point)
Responses
The planet cools
The planet cools
The planet warms
The planet warms
The planet tilts
The planet tilts
The planet moves closer to the sun.
10. Which of the following is the best evidence that supports the rule that only 10% of energy is transferred from one organism to another?(1 point)
Responses
Not all organisms at the lower trophic levels will be eaten and die.
Not all organisms at the lower trophic levels will be eaten and die.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Question 11
11. Do both animal and plant cells have mitochondria? Why or why not?(1 point)
Responses
No; plants don’t perform any processes for which mitochondria would be used.
No; plants don’t perform any processes for which mitochondria would be used.
Yes; they both need mitochondria to convert radiant energy into chemical energy.
Yes; they both need mitochondria to convert radiant energy into chemical energy.
No; plants use chloroplasts the way animals use mitochondria.
No; plants use chloroplasts the way animals use mitochondria.
Yes; they both need mitochondria for cellular respiration.
Yes; they both need mitochondria for cellular respiration.
Question 12
12. Chemosynthesis relies on which energy source?(1 point)
Responses
thermal
thermal
nuclear
nuclear
light
light
chemical
chemical
Question 13
13. What would be 2 sources from which heterotrophs obtain food?(1 point)
Responses
The Sun and the grass
The Sun and the grass
The grass and dead organic matter
The grass and dead organic matter
Chemicals in the environment and mice
Chemicals in the environment and mice
Insects and Bird Eggs
Insects and Bird Eggs
Question 14
14. Most chemosynthetic organisms live in which of the following environments?(1 point)
Responses
Desert Environments
Desert Environments
Marine Environments
Marine Environments
Arctic Environments
Arctic Environments
Forest Environments
Forest Environments
Question 15
15. How did DDT unexpectedly impact the food chain?(1 point)
Responses
DDT was directly toxic to humans
DDT was directly toxic to humans
DDT killed too many insects
DDT killed too many insects
DDT interfered with bird reproduction by weakening their egg shells
DDT interfered with bird reproduction by weakening their egg shells
DDT caused birth defects in mice
DDT caused birth defects in mice
Question 16
16. Why are decomposers important to Earth ecosystem?(1 point)
Responses
Decomposers remove toxins from the environment
Decomposers remove toxins from the environment
Decomposers provide a food source for autotrophs
Decomposers provide a food source for autotrophs
Decomposers allow matter to recycle through the Ecosystem
Decomposers allow matter to recycle through the Ecosystem
Decomposers create fly larvae
Decomposers create fly larvae
Question 17
17. Which of the following is TRUE about Chemosynthesis?(1 point)
Responses
Chemosynthesis requires light to function
Chemosynthesis requires light to function
Chemosynthesis is used by most complex organisms
Chemosynthesis is used by most complex organisms
Chemosynthesis requires free chemicals in the environment
Chemosynthesis requires free chemicals in the environment
Chemosynthesis is how animals digest organic matter.
Chemosynthesis is how animals digest organic matter.
Question 18
18. The Ocean stores carbon from its interactions with the atmosphere, so the ocean serves as a ___________ for the Carbon Cycle. (1 point)
Responses
Carbon Flux
Carbon Flux
Carbon Dioxide
Carbon Dioxide
Carbon Sink
Carbon Sink
Carbon Source
Carbon Source
Question 19
19. How do plants contribute to the Carbon Cycle?(1 point)
Responses
They exhale carbon dioxide
They exhale carbon dioxide
They serve as a carbon sink by creating living matter from Carbon Dioxide
They serve as a carbon sink by creating living matter from Carbon Dioxide
They use Carbon Dioxide in the Process of Photosynthesis
They use Carbon Dioxide in the Process of Photosynthesis
Both B and C
Both B and C
Question 20
20. What is the overall effect of excessive Carbon Dioxide in the atmosphere?(1 point)
Responses
The planet cools
The planet cools
The planet warms
The planet warms
The planet tilts
The planet tilts
The planet moves closer to the sun.
Answers
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