Use This Description to Answer the Following Question

question 88

Multiple Choice

Use this description to answer the following question.
A major group of G-protein-coupled receptors contains seven transmembrane α helices. The amino end of the protein lies at the exterior of the plasma membrane. Loops of amino acids connect the helices either at the exterior face or on the cytosol face of the membrane. The loop on the cytosol side between helices 5 and 6 is usually substantially longer than the others.
-Based on the figure given below, which of these experimental treatments would increase the rate of sucrose transport into the cell?

• A) decreasing extracellular sucrose concentration
• B) decreasing extracellular pH
• C) decreasing cytoplasmic pH
• D) adding an inhibitor that blocks regeneration of ATP
• E) adding a substance that makes the membrane more permeable to hydrogen ions

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Definitions:

Textile Mills

Industrial sites where natural or synthetic fibers are processed into fabric.

Machine Shops

Workshops equipped with mechanical tools and machines for cutting, shaping, and assembling metal parts into finished products or components.

Coal Mines

Deep excavation sites or structures where workers extract coal from the Earth, often featuring complex tunnel systems.

Gestation

The process of carrying or being carried in the womb between conception and birth.