12 Questions
Why is the ability to move important to animals?
It helps them find food.
What form of energy is stored in food?
energy in molecules
How do organisms get the energy they need?
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
How is the decrease in available energy with each organism that is eaten explained by the law of conservation of energy?
Some of the energy is used for life processes.
What does the carbon cycle diagram show?
The flow of carbon through living organisms and the environment
Where do plants get their energy from?
Water and sunlight
What does the text say about the passage of matter through an ecosystem?
It shows how matter can pass through an ecosystem
Which property of nutrients shows that they are matter?
Nutrients have mass
How do consumers get energy to function?
Consumers obtain all of their energy by eating other organisms
Why is decomposition important to life processes?
It releases nutrients for plants and other organisms
Why does life on Earth depend on matter?
Matter serves as a source of nutrients for living organisms
How do plants and animals obtain the elements they need to survive?
By absorbing elements from their surroundings
Study Notes
Energy and Movement in Animals
- The ability to move is crucial for animals to find food, escape predators, and reproduce.
Energy Storage and Transfer
- Food stores energy in the form of chemical bonds.
- Organisms obtain energy by breaking down these chemical bonds through cellular respiration.
Energy Transfer in Ecosystems
- The law of conservation of energy explains that energy decreases with each trophic level, as some energy is lost as heat.
- This energy loss is evident in the decrease in available energy from producers to consumers.
The Carbon Cycle
- The carbon cycle diagram illustrates the flow of carbon through the environment, including the atmosphere, oceans, and land.
Plant Energy Sources
- Plants obtain their energy from the sun through photosynthesis, converting light energy into chemical bonds.
Passage of Matter through Ecosystems
- Matter is passed from one organism to another through consumption, with energy being transferred from one trophic level to the next.
- Nutrients exhibit the property of matter, as they can be recycled and reused.
Consumer Energy Sources
- Consumers obtain energy by breaking down the chemical bonds in the food they consume.
Decomposition and Life Processes
- Decomposition is essential for life processes, as it recycles nutrients and releases energy back into the environment.
Dependence on Matter
- Life on Earth relies on the availability of matter, as it provides the necessary building blocks for growth, development, and energy production.
Element Acquisition
- Plants and animals obtain the elements they need to survive through various mechanisms, such as nutrient uptake and ingestion of food.
Test your knowledge on the flow of energy and cycling of matter in organisms with this quiz. Read each question and circle the letter of the correct answer. The quiz covers topics such as the importance of movement to animals, the form of energy stored in food, and how organisms obtain the energy they need.
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