Biology 0610 · IGCSE · Respiration

Respiration — practice question

The graph presents the findings of an experiment used to study the rate of respiration in an organism at different environmental temperatures. What accounts for the rise in the rate of respiration between $10^{\circ}\text{C}$ and $30^{\circ}\text{C}$?

  • AThe enzymes are denaturing.
  • BThere are more frequent effective collisions between enzyme and substrate molecules.
  • CThere are fewer enzyme-substrate complexes formed.
  • DThere is less kinetic energy.

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