IB Biology · C4.2 · SL

C4.2 Transfers of Energy and Matter (part 1)

14 review questions with answers for C4.2 Transfers of Energy and Matter (part 1), marked SL. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.

A question from this set

The formation of peat and fossil fuels from partially decomposed organic matter?

  • FossilizationRight answer
  • Autotroph
  • Consumer
  • Greenhouse Effect
From C4.2 Transfers of Energy and Matter (part 1), 14 questions.

All 14 questions and answers

  1. The formation of peat and fossil fuels from partially decomposed organic matter?

    Answer: Fossilization

  2. The release of CO₂ into the atmosphere by burning biomass or fossil fuels?

    Answer: Combustion

  3. A gas produced by archaeans in anaerobic conditions, later oxidized to CO₂?

    Answer: Methane (CH₄)

  4. Gases that absorb and re-emit long-wave infrared radiation in the atmosphere?

    Answer: Greenhouse Gases

  5. The two most significant greenhouse gases?

    Answer: CO₂ and Water Vapor

  6. The type of radiation emitted by the Earth's surface after absorbing sunlight?

    Answer: Long-wave Radiation (Infrared)

  7. The process of the atmosphere trapping heat to keep Earth warm?

    Answer: Greenhouse Effect

  8. What do the arrows represent in a food chain or food web?

    Answer: Direction of Energy Flow

  9. An organism that uses external energy sources (usually sunlight) to synthesize its own organic molecules from inorganic substances?

    Answer: Autotroph

  10. An organism that obtains organic molecules from other organisms (by feeding on them)?

    Answer: Heterotroph

  11. An autotroph that starts a food chain by capturing light energy to create chemical energy (biomass)?

    Answer: Producer

  12. A heterotroph that feeds on living organisms by ingestion?

    Answer: Consumer

  13. A general term for organisms that break down dead organic matter, recycling nutrients back into the ecosystem?

    Answer: Decomposer

  14. A heterotroph that obtains nutrients from dead organic matter (detritus) by internal digestion?

    Answer: Detritivore

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