The Radioactive Isotope Bismuth-210 Has a Half-Life of 5 Days

question 109

Multiple Choice

The radioactive isotope Bismuth-210 has a half-life of 5 days. How many days does it take for 87.5% of a given amount to decay?

• A)15
• B)8
• C)10
• D)13
• E)11
• F)9
• G)12
• H)14

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Definitions:

DNA

A molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

Chromosome

A thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

Nucleus

The membrane-bound organelle in eukaryotic cells that contains genetic material (DNA).

Second Meiotic Division

The second phase of meiosis where sister chromatids are separated, resulting in the formation of four haploid daughter cells from the initial diploid cell.