In Which of the Following Is Cell Signaling Prevented

question 22

Multiple Choice

In which of the following is cell signaling prevented?

• A)The nicotine in cigarette smoke binds to and activates the acetylcholine receptor in plasma membranes of neurons in the brain.
• B)Proteins on the surface of cells in taste buds called umami receptors bind to glutamates and nucleotides in food, which changes the membrane potential of these cells and tells the brain, "This is savory."
• C)Allergy medicines, which are called antihistamines, bind to and block histamine receptors to keep fluids in capillaries that would normally be released and cause stuffy noses and watery eyes.

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Definitions:

Null Hypothesis

The presumption of no significant difference or association in a set of data, serving as a default position in hypothesis testing until evidence suggests otherwise.

Aluminum Concentrations

The measured levels of aluminum in a given sample or environment.

Test Statistic

A statistic used to estimate the parameter of interest in a statistical hypothesis test.

Kruskal-Wallis Test

A nonparametric statistical test used to compare three or more groups based on ranked data. It is an extension of the Mann-Whitney U test for more than two groups.