Question

The diagram shows an experiment to investigate
anaerobic respiration in yeast cell:
What is the purpose of liquid paraffin in Tube A?
(a) To prevent evaporation
(b) To stop air from getting in
(c) To stop the temperature from going
(d) To stop water from getting in​

Answer 1

Answer:

B) To stop air from getting in

Explanation:

The liquid paraffin acts as a barrier between any oxygen present and the yeast solution, thus preventing aerobic respiration from taking place and nullyfying the experiment.