Consider the Transport of Glucose into an Erythrocyte by Facilitated

question 76

Multiple Choice

Consider the transport of glucose into an erythrocyte by facilitated diffusion. What is the free-energy change for glucose uptake into the cell when the glucose concentrations are 5 mM on the outside and 0.1 mM on the inside? (These values may be of use to you: R = 8.315 J/mol · K; T = 298 K;(Faraday constant) = 96,480 J/V; N = 6.022 × 10²³/mol.)

• A) less than 2 kJ/mol
• B) about 10 kJ/mol
• C) about 30 kJ/mol
• D) about -30 kJoule/mol
• E) It is impossible to calculate without knowledge of the membrane potential.

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Definitions:

Pons

A part of the brainstem that links the medulla oblongata and the thalamus, critical for regulating breathing and sleep cycles.

Diencephalon

A region of the brain that includes structures such as the thalamus and hypothalamus, involved in sensory and autonomic functions.

Third Ventricle

One of the four connected fluid-filled cavities within the brain, part of the ventricular system, situated in the midline of the brain beneath the corpus callosum.

Cranial Nerves

Twelve pairs of nerves that emerge directly from the brain (not the spinal cord), responsible for conveying sensory and motor information to and from the head and neck.