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Questions and Answers
Which of the following is an example of how energy is transferred through an ecosystem?
Which of the following is an example of how energy is transferred through an ecosystem?
- A rock weathering and eroding.
- A spider catching and eating a fly. (correct)
- A cloud forming in the sky.
- A river flowing downhill.
What is the primary source of energy for most ecosystems on Earth?
What is the primary source of energy for most ecosystems on Earth?
- Tidal energy
- Wind energy
- Solar energy (correct)
- Geothermal energy
What is the chemical formula for glucose, the sugar produced by plants during photosynthesis?
What is the chemical formula for glucose, the sugar produced by plants during photosynthesis?
- $H_2O$
- $C_6H_{12}O_6$ (correct)
- $CO_2$
- $O_2$
In a food chain, the energy transferred between organisms is approximately:
In a food chain, the energy transferred between organisms is approximately:
Which organism is considered a heterotroph?
Which organism is considered a heterotroph?
What is the reason why energy pyramids rarely have more than six levels?
What is the reason why energy pyramids rarely have more than six levels?
Which of the following is NOT a factor that contributes to energy loss between trophic levels?
Which of the following is NOT a factor that contributes to energy loss between trophic levels?
According to the Law of Conservation of Energy, what happens to energy when it is transferred between different forms?
According to the Law of Conservation of Energy, what happens to energy when it is transferred between different forms?
Which of the following energy transformations is NOT directly involved in the rabbit gaining 100J of energy from a plant?
Which of the following energy transformations is NOT directly involved in the rabbit gaining 100J of energy from a plant?
According to the law of conservation of energy in food chains, why is energy lost during respiration and excretion?
According to the law of conservation of energy in food chains, why is energy lost during respiration and excretion?
What is the role of chlorophyll in photosynthesis?
What is the role of chlorophyll in photosynthesis?
Which of the following is NOT a direct consequence of glucose being burned with oxygen during respiration?
Which of the following is NOT a direct consequence of glucose being burned with oxygen during respiration?
What is the main difference between how energy is stored in a plant and how it is stored in fossil fuels?
What is the main difference between how energy is stored in a plant and how it is stored in fossil fuels?
Why is energy lost as it moves up a food chain?
Why is energy lost as it moves up a food chain?
Which of the following best describes the role of decomposers in the energy flow of an ecosystem?
Which of the following best describes the role of decomposers in the energy flow of an ecosystem?
Flashcards
Energy in ecosystems
Energy in ecosystems
The interaction of living organisms involving energy transfer.
Energy transfer
Energy transfer
Movement of energy through an ecosystem via organisms.
Trophic level
Trophic level
Each step in a food chain representing energy transfer.
Autotrophs
Autotrophs
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Heterotrophs
Heterotrophs
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Energy transfer pyramid
Energy transfer pyramid
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Energy loss in ecosystems
Energy loss in ecosystems
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Law of Conservation of Energy
Law of Conservation of Energy
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Rabbit Energy Gain
Rabbit Energy Gain
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Photosynthesis Equation
Photosynthesis Equation
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Respiration Reaction
Respiration Reaction
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Fossil Fuels Basics
Fossil Fuels Basics
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Coal Composition
Coal Composition
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Petroleum Formation
Petroleum Formation
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Study Notes
Energy Transfer Through Ecosystems
- Energy flows through ecosystems through interactions between living organisms.
- Fungi feed on dead trees.
- Snakes prey on mice.
- Plants perform photosynthesis.
Photosynthesis
- Plants convert solar energy into chemical energy (stored in glucose).
- The chemical reaction is: 6 CO2 + 12H2O + light energy → C6H12O6 + 6O2 + 6H2O
Energy Transfer Through Food Chains
- Energy transfers through levels in a food chain.
- Each level is called a trophic level.
- Plants are the first trophic level.
- Animals that feed on plants are the second trophic level.
- Animals that feed on other animals are higher trophic levels.
- Energy is lost between each trophic level.
Energy Pyramids
- Energy pyramids show how energy is transferred through a food chain.
- There are rarely more than six levels.
- The remaining energy is small, making it more efficient to consume plants directly rather than animals that eat plants.
Law of Conservation of Energy
- Energy cannot be created or destroyed, only converted from one form to another.
- In an ecosystem, energy is transferred from one organism to another, with some being lost as heat.
Fossil Fuels
- Fossil fuels are formed from the remains of living organisms.
- Examples include coal, petroleum, and natural gas.
- They store solar energy that was captured by plants millions of years ago.
Ecological Balance
- Maintaining the balance of oxygen and carbon dioxide in the atmosphere is essential.
- Plants use carbon dioxide and release oxygen during photosynthesis.
Energy Flow
- Solar energy is stored in glucose during photosynthesis.
- Animals consume plants and use the energy stored in glucose during cellular respiration to produce ATP for vital processes.
- Carbon and water are recycled between the environment and living organisms.
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Description
Explore the processes of energy transfer through ecosystems, focusing on the roles of different organisms and photosynthesis. This quiz covers topics like food chains, trophic levels, and energy pyramids, emphasizing the efficiency of energy usage in ecosystems.
