Different metal ion that might replace Zn2+ Z
n
2
+
in enzymes instead of Cd2+
C
d
2
+
?

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Enzymes affect the reactions in living cells by changing the