Provide an Appropriate Response

question 102

Multiple Choice

Provide an appropriate response.
-The half-life of a radioactive substance is 65 years. If you start with some amount of this substance, what fraction will remain in 132 years?

• A)0.24
• B)0.06
• C)0.01
• D)4.09

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Definitions:

Rodlike Structures

Any elongated, cylindrical shapes or components found in biological organisms or cells, often referring to the physical structure of certain proteins or cellular organelles.

Actin

The protein of which microfilaments consist. Actin, together with the protein myosin, is responsible for muscle contraction.

Rough Endoplasmic Reticulum

A region of the endoplasmic reticulum associated with ribosomes, involved in the synthesis and processing of proteins.

Ribosomes

Cellular structures where protein synthesis occurs, reading mRNA and assembling amino acids into proteins according to the genetic instructions.