A Scientist Is Observing a Membrane Through Which Water and Some

question 55

Multiple Choice

A scientist is observing a membrane through which water and some small hydrophobic molecules can freely pass along a concentration gradient from high to low.However,some sugar molecules are too large to pass through the membrane either way without the assistance of passive transport proteins.Additionally,small Na⁺ ions and some proteins can pass through the membrane against the concentration gradient,but both require the assistance of active transport proteins.What general type of membrane are they observing?

• A) impermeable
• B) impenetrable
• C) semipermeable
• D) completely permeable

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Definitions:

Attention

The cognitive process of selectively focusing on specific stimuli, while ignoring other information.

Attentional Capture

A phenomenon where an individual's attention is automatically drawn towards a particularly conspicuous or salient stimulus, often interrupting ongoing activities.

Voluntary Process

An action or operation that is performed intentionally or under conscious control.

Passenger

An individual who travels in a vehicle, like a car, plane, or train, but does not operate it.