Which of the Following Is Not an Example of a Barrier

question 48

Multiple Choice

Which of the following is not an example of a barrier to entry?

• A)A soybean farmer is the first in her county to use a new brand of fertilizer.
• B)Microsoft obtains a copyright for its Windows operating system.
• C)A pharmaceutical company obtains a patent for a new medication to treat migraine headaches.
• D)A taxi cab driver in New York City obtains a license to legally provide transportation in New York City.

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Definitions:

Facilitated Diffusion

Passive transport mechanism in which a solute follows its concentration gradient across a membrane by moving through a transport protein.

Concentration Gradient

A variation in the concentration of a substance across a distance.

Glucose Transporter

Proteins located in cell membranes that assist in the transport of glucose molecules into and out of cells, facilitating the use of glucose for energy.

Facilitated Diffusion

A process of passive transport, with no energy consumption, where molecules move across a cellular membrane via protein channels.