A
B
C
200
How does energy flow through an ecosystem differ from nutrient cycling?
A. While energy flows through an ecosystem in a linear fashion (from producers to consumers) and is eventually lost as heat, nutrients are recycled and reused within the ecosystem.
B. : Energy efficiency refers to the proportion of energy that is actually used for biological processes compared to the total energy consumed, and organisms have evolved adaptations to maximize energy efficiency.
While energy flows through an ecosystem in a linear fashion (from producers to consumers) and is eventually lost as heat, nutrients are recycled and reused within the ecosystem.
200
How is energy captured by plants and converted into usable form?
A. Through photosynthesis, where sunlight is used to convert carbon dioxide and water into glucose (chemical energy).
B. The laws of thermodynamics, particularly the second law stating that energy is lost as heat with each transfer.
Through photosynthesis, where sunlight is used to convert carbon dioxide and water into glucose (chemical energy).
200
Explain how the concept of energy efficiency relates to the study of energy flow in living systems.
A. While energy flows through an ecosystem in a linear fashion (from producers to consumers) and is eventually lost as heat, nutrients are recycled and reused within the ecosystem.
B. Energy efficiency refers to the proportion of energy that is actually used for biological processes compared to the total energy consumed, and organisms have evolved adaptations to maximize energy efficiency.
Energy efficiency refers to the proportion of energy that is actually used for biological processes compared to the total energy consumed, and organisms have evolved adaptations to maximize energy efficiency.
400
What is the primary source of energy for most living systems?
A.Consumers
B. SUN
SUN!!!
400
What is the molecule used by cells as the primary energy currency?
A. Adenosine triphosphate (ATP)
B. The Sun
Adenosine triphosphate (ATP).
400
How does cellular respiration convert glucose into ATP?
A.A food chain is a linear sequence of organisms where energy is transferred from one to the next, starting with producers (plants), then primary consumers (herbivores), secondary consumers (carnivores), and so on, with energy gradually decreasing at each level.
B. Through a series of chemical reactions that break down glucose in the presence of oxygen, releasing energy that is used to create ATP molecules.
Through a series of chemical reactions that break down glucose in the presence of oxygen, releasing energy that is used to create ATP molecules.
600
What are organisms that can produce their own food called?
A.Photosynthesis
B. Producers (like plants)
Producers (like plants)
600
Why are there typically fewer organisms at higher trophic levels in a food chain?
A. The laws of thermodynamics, particularly the second law stating that energy is lost as heat with each transfer.
B. Because energy is lost at each trophic level, meaning less energy is available to support larger populations at higher levels.
Because energy is lost at each trophic level, meaning less energy is available to support larger populations at higher levels.
600
How does energy move through a food chain?
A. Energy flows from producers to primary consumers, then to secondary consumers, and so on, with each transfer losing some energy as heat
B.Plants use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen
Energy flows from producers to primary consumers, then to secondary consumers, and so on, with each transfer losing some energy as heat
800
What are organisms that need to consume other organisms to obtain energy called?
A.Consumers
B.Producers (like plants)
Consumers
800
Explain the concept of a food chain and how energy flows through it.
A. A food chain is a linear sequence of organisms where energy is transferred from one to the next, starting with producers (plants), then primary consumers (herbivores), secondary consumers (carnivores), and so on, with energy gradually decreasing at each level.
B. : Because energy is lost at each trophic level, meaning less energy is available to support larger populations at higher levels
A food chain is a linear sequence of organisms where energy is transferred from one to the next, starting with producers (plants), then primary consumers (herbivores), secondary consumers (carnivores), and so on, with energy gradually decreasing at each level.
800
What is the molecule used by cells as the primary energy currency?
A. SUN
B. Adenosine triphosphate (ATP).
Adenosine triphosphate (ATP).
1000
How does cellular respiration convert energy from food into ATP?
A. Plants use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen
B. Through a series of chemical reactions involving glucose and oxygen, cells break down food molecules to generate ATP.
Through a series of chemical reactions involving glucose and oxygen, cells break down food molecules to generate ATP.
1000
What is a trophic level?
A. A new species could disrupt the energy flow by competing with existing organisms for food sources or by introducing new predator-prey relationships.
B. A trophic level refers to a specific position an organism occupies in a food chain based on its feeding relationship
A trophic level refers to a specific position an organism occupies in a food chain based on its feeding relationship
1000
If a new species is introduced to an ecosystem, how might it affect the existing energy flow?
A. A new species could disrupt the energy flow by competing with existing organisms for food sources or by introducing new predator-prey relationships
B. Through a series of chemical reactions that break down glucose in the presence of oxygen, releasing energy that is used to create ATP molecules.
A new species could disrupt the energy flow by competing with existing organisms for food sources or by introducing new predator-prey relationships
