IB Biology SL C4.2.9 Energy Release Questions

Connect cellular respiration in marine organisms with carbon-dioxide production and diffusion or gas exchange out of the organism in IB Biology SL C4.2.9.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify cellular respiration as the process that produces carbon dioxide from a marine organism’s oxidized carbon compounds, and identify gas exchange or diffusion as the route by which the carbon dioxide is lost.

IB Biology SL C4.2.9 Energy Release Questions question 1

[Maximum number: 1]

The mass of an individual organism can affect its physiology and feeding ecology. The diagram shows the relative mass of carbon (black) and total wet mass (grey) of a marine crustacean, Calanus hyperboreus and a jellyfish, Bathocyroe fosteri.

Figure for Question IB Biology SL C4.2.9 Energy Release Questions question 1 — IB Biology SL

State one process that results in the loss of carbon dioxide from a marine organism such as a crustacean or a jellyfish.

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