D-Glucose Is Added to Cells and the Rate of Glucose

question 4

Multiple Choice

D-glucose is added to cells and the rate of glucose transport is plotted against D-glucose concentration.In the presence of the D-galactose derivative 6-O-benzyl-D-galactose,the curve is shifted to the right,indicating that D-glucose and the D-galactose derivative both compete for a place in the binding site.Which of the following is true?

• A)The D-galactose derivative occupies some of the available binding sites.
• B)Given the same concentration of glucose available,the number of binding sites with D-glucose present would decrease.
• C)Given the same concentration of glucose,the rate of D-glucose flux would remain the same with the D-galactose derivative added.
• D)Presumably a higher concentration of D-glucose would be required in order to maintain the same rate of D-glucose flux as before the D-galactose derivative was added.
• E)All of the above are true.

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Definitions:

Thoracic

Pertaining to the chest area or the thorax, the part of the body between the neck and the abdomen.

Abdominal Cavities

These are spaces within the abdomen that house major organs including the stomach, liver, and intestines.

Pulmonary Function

The capability of the lungs to exchange oxygen and carbon dioxide efficiently, often measured by specific tests.

Oxygen

is a chemical element with symbol O, essential for most life on Earth, particularly for the process of cellular respiration.