Which of These Statements About Facilitated Diffusion Across a Membrane

question 38

Multiple Choice

Which of these statements about facilitated diffusion across a membrane is true?

• A)A specific membrane protein lowers the activation energy for movement of the solute through the membrane.
• B)It can increase the size of a transmembrane concentration gradient of the diffusing solute.
• C)It is impeded by the solubility of the transported solute in the nonpolar interior of the lipid bilayer.
• D)It is responsible for the transport of gases such as O₂,N₂,and CH₄ across biological membranes.
• E)The rate is not saturable by the transported substrate.

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Definitions:

Experimenter Expectancies

The potential influence that a researcher's beliefs, hopes, or biases can have on the outcome of an experiment, often impacting the behavior being studied.

Rosenthal Effect

The phenomenon in which the higher expectations placed upon individuals either by themselves or others lead to better performance; also known as the Pygmalion effect.

Quasi-experimental Designs

Research methods that aim to evaluate interventions without using random assignment, often by comparing groups that naturally exist.

Experimenter Bias

A process where the scientists conducting an experiment influence the results, intentionally or unintentionally, in a direction consistent with their hypothesis.