Multiple Choice
From where does a heterotroph directly obtain its energy?
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7. Energy and Metabolism
Introduction to Metabolism
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How does energy primarily move between living organisms in an ecosystem?
A
By direct absorption from the sun
B
Through the decomposition of inorganic matter
C
Through the consumption of producers by consumers
D
By the conversion of heat energy into chemical energy
Verified step by step guidance1
Understand the concept of energy flow in an ecosystem: Energy primarily enters ecosystems through sunlight, which is captured by producers (like plants) during photosynthesis.
Recognize the role of producers: Producers convert solar energy into chemical energy stored in glucose and other organic molecules, which serve as food for other organisms.
Identify the role of consumers: Consumers, such as herbivores, obtain energy by eating producers. This is the primary way energy moves between organisms in an ecosystem.
Consider the food chain: Energy is transferred from producers to primary consumers (herbivores), then to secondary consumers (carnivores), and so on, through the food chain.
Note the inefficiency of energy transfer: At each trophic level, energy is lost as heat due to metabolic processes, which is why energy transfer is not 100% efficient.
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