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Phenol red, a pH indicator, is used in the experiment to determine respiration activity by showing...

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Question

Biology

Phenol red, a pH indicator, is used in the experiment todetermine respiration activity by showing CO2production.

Table:   CO2 Production by Beans

Beans

Indicator Color

(Phenol Red)

Conclusion

(CO2 present or absent)

Germinating

Yellow

Present

Ungerminated-dry

Red

Absent

Questions;

1. How does phenol red work as a pH indicator?

2. Why does this show respiration activity?

Answer & Explanation Solved by verified expert
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