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 was 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 have 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:

Demand Shift

Occurs when the entire demand curve moves due to changes in factors other than the price of the good, such as consumer preferences or income.

Supply Increase

A situation where the quantity of a good or service that is available to consumers rises.

Increasing-Cost Industry

An increasing-cost industry is one in which costs of production increase as the industry expands, often due to factors like limited resources or higher input prices.

Long-Run Supply Curve

A graphical representation showing quantities of goods a firm is willing and able to supply at different prices over a long period, assuming all inputs are variable.