IB Biology HL C4.2.9 Energy Release Questions

Analyse how oxidation of carbon compounds during respiration produces carbon dioxide and how diffusion or gas exchange removes it from marine organisms in IB Biology HL C4.2.9.

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.

[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 HL C4.2.9 Energy Release Questions question 1 — IB Biology HL

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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IB Biology HL C4.2.9 Energy Release Questions question 1