How many micrograms are in 1 gram?

To understand why the correct answer is that there are 1,000,000 micrograms in 1 gram, it's important to know the relationship between grams and micrograms.

A gram is equal to 1,000 milligrams, and a milligram is equal to 1,000 micrograms. Therefore, to convert grams to micrograms, you can multiply the number of grams by 1,000, then multiply the result by another 1,000. So, in the case of 1 gram:

1 gram = 1,000 milligrams 1,000 milligrams = 1,000 x 1,000 micrograms = 1,000,000 micrograms

This systematic conversion clearly shows that 1 gram equals 1,000,000 micrograms, making the answer correct. The understanding of metric prefixes and their relations plays a crucial role in this calculation, where 'micro-' signifies a factor of 10^-6, and thus emphasizes the large difference when converting from grams to micrograms.