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:

Squirrel-Cage Induction Motors

A type of induction motor characterized by a rotor design resembling a squirrel cage, widely used due to its simplicity and durability.

Percent Slip

The percent of speed difference between the speed of the rotor and the speed of the rotation magnetic field of a motor.

Synchronous Motor

A type of AC motor that operates at a speed directly proportional to the frequency of the current supply.

Power Factor Correction

Adding capacitance or inductance to a circuit to cause the current and voltage to become more in phase with each other.