Question 8
Original source text (the exact panel preserves diagram labels, tables and choices):
Jennifer performed an experiment to test the ability of different heavy metals to
inhibit normal enzyme activity in the liver. She placed 5 g of the liver in each of the
5 test tubes. In 4 of the tubes, she also placed equal amounts of heavy metal. She
then added 6 mL of hydrogen peroxide to all five tubes. She used the resulting
bubble column as an indicator of enzyme activity in the liver and recorded the data
in the table below:
Based on Jennifer’s data, which of the 4 heavy metals inhibited enzyme activity
the LEAST?
A. Zn
B. Mg
C. Hg
D. Pb
Jennifer performed an experiment to test the ability of different heavy metals to
inhibit normal enzyme activity in the liver. She placed 5 g of the liver in each of the
5 test tubes. In 4 of the tubes, she also placed equal amounts of heavy metal. She
then added 6 mL of hydrogen peroxide to all five tubes. She used the resulting
bubble column as an indicator of enzyme activity in the liver and recorded the data
in the table below:
Based on Jennifer’s data, which of the 4 heavy metals inhibited enzyme activity
the LEAST?
A. Zn
B. Mg
C. Hg
D. Pb