What is one metric measurement equivalent to 1,000,000 micrograms?

One metric measurement equivalent to 1,000,000 micrograms is indeed 1 gram. This is based on the metric system where the relationships between different units are defined by powers of ten. Specifically, 1 gram is equal to 1,000,000 micrograms since:

• 1 milligram equals 1,000 micrograms.

• Therefore, 1 gram (which equals 1,000 milligrams) is calculated as 1,000 milligrams multiplied by 1,000 micrograms per milligram, resulting in 1,000,000 micrograms in total.

In the context of the other choices, a value of 0.1 gram would translate to 100,000 micrograms, while 10 grams would be 10,000,000 micrograms, and 100 grams would be 100,000,000 micrograms. Thus, only 1 gram accurately reflects the metric equivalency of 1,000,000 micrograms.