As Part of an Experiment, Researchers Grew Several Different Types

question 58

Multiple Choice

As part of an experiment, researchers grew several different types of cells in the presence of radioactive iodine. After some time had passed, the cells were washed, and the levels of iodine inside the cell were determined. What is the most plausible explanation for why some cells had higher levels of radioactivity after treatment than others?

• A) Cells that had high radioactivity levels after treatment contain iodine transporters.
• B) Cells that had high radioactivity levels after treatment lack iodine transporters.
• C) Cells that had high radioactivity levels after treatment had a mutation in genes encoding iodine transporter proteins.
• D) Cells that had high radioactivity levels after treatment lack clathrin.
• E) Cells that had high radioactivity levels after treatment lack lysosomes.

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Definitions:

Escalator Clauses

Contractual provisions allowing for an automatic increase in prices or wages under certain conditions, often tied to inflation rates or cost increases.

Scrap Disposal

The process of getting rid of waste materials, remnants, or byproducts from manufacturing or consumption.

Primary Metals

The unalloyed, pure forms of metals extracted directly from the earth through mining processes, which serve as the basic raw materials for metal production and manufacturing.

Price Fluctuation

Variability in the prices of goods and services over time due to factors like supply and demand dynamics, market conditions, and external economic influences.