The diagram below represents a set up that students used in an investigation.

(a) Name the physiological process that was being investigated.
b) State the role of potassium hydroxide in flask K
c) Account for the observation in boiling tube L and flask N.

Answer:

a)
- Respiration/aerobic respiration.
b)
-Absorbs carbon (IV) oxide from the atmosphere.
c)
- L- remained clear: No white precipitate formed because #CO_2# from the atmosphere has been absorbed by potassium hydroxide.
- N- lime water forms a white precipitate, where #CO_2# was given out by cockroaches during respiration

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The diagram below represents a set up that students used in an investigation. (a) Name the physiological process that was being investigated. b) State the role of potassium hydroxide in flask K c) Account for the observation in boiling tube L and flask N.

The diagram below represents a set up that students used in an investigation.

(a) Name the physiological process that was being investigated.
b) State the role of potassium hydroxide in flask K
c) Account for the observation in boiling tube L and flask N.