BI-2140
Enzyme experiments
Biology · Secondary 4 · Hard · Enzyme experiments
A student prepares a series of catalase solutions by serial dilution. She mixes 8 cm³ of celery extract with 8 cm³ of water to make Tube X. She then transfers 8 cm³ from Tube X into a new tube and adds 8 cm³ of water to make Tube Y. If the original extract is 100% catalase, what is the percentage concentration in Tube Y?
- 25%
- 12.5%
- 50%
- 75%
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