Which term describes an organism that cannot synthesize its own organic compounds and must obtain energy by consuming others?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Which term describes an organism that cannot synthesize its own organic compounds and must obtain energy by consuming others?

How organisms obtain organic compounds and energy. Organisms that cannot make their own organic compounds must obtain them by consuming other organisms or their products—that describes heterotrophs. They rely on preformed organic molecules from food and release energy by breaking them down through cellular respiration. In contrast, autotrophs synthesize their own organic molecules using energy from light or inorganic chemical energy. The other terms aren’t about nutrition: isotonic is about equal solute concentration across a membrane, kingdom is a taxonomic level, and hydrostatic pressure is a physical force in fluids.

Which term describes an organism that cannot synthesize its own organic compounds and must obtain energy by consuming others?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Which term describes an organism that cannot synthesize its own organic compounds and must obtain energy by consuming others?

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