BI-2216
Aerobic respiration
Biology · Secondary 4 · Hard · Aerobic respiration
A student sets up an experiment to show that germinating seeds respire.
She places soaked bean seeds on a wire mesh above sodium hydroxide solution in a sealed flask with a capillary tube and coloured oil drop.
What will happen to the oil drop and why?
She places soaked bean seeds on a wire mesh above sodium hydroxide solution in a sealed flask with a capillary tube and coloured oil drop.
What will happen to the oil drop and why?
- Oil drop moves towards the flask because oxygen is used and carbon dioxide is absorbed
- Oil drop moves away from the flask because oxygen is released by the seeds
- Oil drop does not move because total gas volume stays constant
- Oil drop moves towards the flask because air in the tube expands when cooled
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