The Following Information Should Be Used to Answer the Following

question 69

Multiple Choice

The following information should be used to answer the following questions.
Cystic fibrosis is a genetic disease in humans in which chloride ion channels in cell membranes are missing or nonfunctional.
-Chloride ion channels are membrane structures that include which of the following?

• A)gap junctions
• B)aquaporins
• C)hydrophilic proteins
• D)carbohydrates
• E)sodium ions

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Definitions:

Pupil

The adjustable opening in the center of the eye that allows varying amounts of light to enter.

Doughnut-shaped

Having the shape of a doughnut; circular with a hole in the center.

Afterimage

A visual illusion in which a retinal impression persists after the removal of a stimulus, often colored differently than the original image.

Tree Leaves

The photosynthetic organs of trees, usually green, capturing sunlight for energy production and playing a crucial role in gas exchange.